About Us: Innovation Leader in Industrial Remote Control
Seif brand originated in 2005 and officially entered the industrial remote control field in 2009. Located in Zhengzhou High-tech Development Zone Electronic Appliance Industrial Park, we are a high-tech enterprise specializing in the R&D, production, and sales of industrial remote controls.
Our Groundbreaking Achievements:
- Pioneer of Triple-Proof Industrial Remote Controls: China's first industrial remote control brand to achieve IP68 protection level, with explosion-proof remote controls certified for intrinsic safety and flameproof.
- Creator of Authorization ID Card Remote Controls: China's unique identity authorization ID card remote control.
- Developer of Frequency Conversion Wireless Control Terminals: First to research and develop crane frequency converter wireless control terminals.
- Pioneer of IoT Industrial Remote Controls: Driving industrial remote control into the era of IoT.
- Inventor of Fingerprint Recognition Security Management Systems: Enhancing the safety of industrial operations.
Company Qualifications & Development Milestones
Certifications & Patents
Our products have repeatedly passed certifications from the National Crane and Transport Machinery Product Quality Supervision and Inspection Center. We have obtained ISO9001, ISO14001, and ISO45001 triple system certifications, 51 national patents, and various other certificates, including ERD, EAC, and ROHS.
Technological Innovation Milestones
- 2012: Developed a sealed bistable cyclic press self-locking emergency stop button (National Utility Model Patent obtained), completely solving the waterproof and wear issues of industrial remote control emergency stop buttons.
- 2013: Pioneered independent plug-in card design (National Utility Model Patent obtained).
- 2017: Successfully developed Seif crane frequency converter wireless control terminal and applied for national patent.
- 2018: Successfully developed low-temperature resistant remote controls.
- 2019: Successfully developed drop-proof rotary emergency stop; receiver adopted full voltage technology in the same year.
- 2020: Developed remote control distance adjustment technology, effectively solving power consumption and interference issues.
- 2023: 4 major sub-brands launched simultaneously.
- January 2024: Officially launched the unique identity authorization ID card remote control.
- 2024: Seif dual-band joystick remote control introduced.
Corporate Culture
Corporate Vision
To become an innovative leader in the global industrial remote control field.
Corporate Mission
To make industrial wireless control more convenient, safer, and smarter.
Brand Slogan
Seif, is Safety!
Core Values
Self-discipline, Self-reflection, Innovation, Prudence, Excellence, Focus, Perseverance, Altruism.
Development Philosophy
Electrical electronization, Electronic informatization, Information IoT-ization, IoT AI-ization.
Product Series Overview
Our products cover all categories of remote controls for cranes, with 102 models fully meeting the requirements for various industrial remote control scenarios.
Joystick Remote Control Series
Model: SF-A900
Joystick Remote Control Parameters
| Item | Parameter |
|---|---|
| Shell Material | Engineering Plastic |
| Start Method | Press side power switch, long press 2s to power on, long press 2s to power off |
| Frequency Range | 430-435MHz |
| Emergency Stop Switch | Mushroom Head Type |
| LED Indicator | Signal Indicator/Battery Status |
| Power Supply | Modular Lithium Battery 7.4V 5000mAH, continuous working time >8 hours |
| Charger/Charging Time | LBC-EL7H / 5 hours |
| Protection Class | IP65 |
| Shell Dimensions | 259mm * 187mm * 179mm |
Model: SF-A800
Joystick Remote Control Parameters
| Item | Parameter |
|---|---|
| Shell Material | Glass Fiber Reinforced Nylon |
| Operation Panel | 2 joysticks and command buttons |
| Antenna Type | Built-in |
| Low Battery Warning & Alarm | Yes |
| Operation Switch Control Points | 4 toggle switches, 6 self-resetting buttons |
| Directional Joystick Control Quantity | 2 four-speed dual-axis universal joysticks (optional cross-limit type or 3-speed/2-speed limit type) |
| Status Display | 2.8-inch LCD and LED indicator |
| Voltage Range | 8.0V < (Power Voltage) < 8.4V |
| Current | <200mA |
| Working Time | >8 hours |
| Operating Temperature | -20℃ ~ +65℃ |
| Power Supply | Modular Lithium Battery 7.4V 5000mAH |
| Protection Class | IP65 |
| Shell Dimensions | 250.8mm * 174.1mm * 171mm |
Model: SF-A700
Joystick Remote Control Parameters
| Item | Parameter |
|---|---|
| Shell Material | Glass Fiber Reinforced Nylon |
| Operation Panel | 2 joysticks and command buttons |
| Antenna Type | Built-in |
| Low Battery Warning & Alarm | Yes |
| Operation Switch Control Points | 4 toggle switches, 6 self-resetting buttons |
| Directional Joystick Control Quantity | 2 four-speed dual-axis universal joysticks (optional cross-limit type or 3-speed/2-speed limit type) |
| Status Display | LED indicator |
| Voltage Range | 8.0V < (Power Voltage) < 8.4V |
| Current | <200mA |
| Working Time | >8 hours |
| Operating Temperature | -20℃ ~ +65℃ |
| Power Supply | Modular Lithium Battery 7.4V 5000mAH |
| Protection Class | IP65 |
| Shell Dimensions | 250.8mm * 174.1mm * 171mm |
Model: Customized W1000
Joystick Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 259mm * 187mm * 179mm |
| Shell Material | Low-temperature resistant material/Corrosion-resistant reinforced fiberglass nylon |
| Emergency Stop Type | Waterproof push-lock bistable emergency stop/Plastic rotary emergency stop |
| Number of Action Buttons | Standard: 6 dual-speed + 1 single-speed action button, customizable |
| Transmitting Frequency | 868MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | Modular Lithium Battery (5000mAh/7.4V) |
| Receiver Type | F |
Authorization ID Card Series
Core Technology
- Unique Identity Recognition: Complies with TSG51-2023, each remote control is equipped with a unique ID card. Operation requires card insertion, and removal stops the device, achieving "one machine, one person, one card" for easy management.
- Start Method: Requires inserting the ID card with the barcode facing up, and rotating the emergency stop knob to open.
- Authorization Indication: When the green authorization light flashes, press the start button to activate the device.
- Safe Shutdown: First press the stop button, then remove the ID card and store it properly.
- Unique ID Code: Each device has a unique, non-repeating ID code. One ID card can control multiple transmitters (simultaneous use is strictly prohibited). The card top has a device marking area.
- Clear Identification: Operation panel buttons have clear action mechanism markings to prevent misoperation.
- Voltage Indication: Features undervoltage and battery replacement indicator lights to ensure sufficient power.
- Quick Emergency Stop: Equipped with a prominent rotary mushroom head emergency stop at the top. Normal stop time is controlled within 200ms, far superior to the 550ms standard.
- Anti-interference Capability: When channel interference is too strong or no signal is received, action output can be shut down within 0.4 seconds.
Model: SF-6SR
Crane Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant reinforced fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 6 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 3 AA alkaline batteries |
| Receiver Type | C Type |
| Number of Receiver Common Wires | Standard: 1 & Customizable |
Model: SF-8SR
Crane Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant reinforced fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 8 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 3 AA alkaline batteries |
| Receiver Type | C |
Model: SF-10SR
Crane Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant reinforced fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 10 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 3 AA alkaline batteries |
| Receiver Type | E |
Model: SF-12SR
Crane Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant reinforced fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 12 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 3 AA alkaline batteries |
| Receiver Type | E |
Model: SF-6DR
Crane Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant reinforced fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 6 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 3 AA alkaline batteries |
| Receiver Type | D |
Model: SF-8DR
Crane Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant reinforced fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 8 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 3 AA alkaline batteries |
| Receiver Type | E |
Model: SF-10DR
Crane Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant reinforced fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 10 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 3 AA alkaline batteries |
| Receiver Type | E |
Model: SF-12DR
Crane Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant reinforced fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 12 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 3 AA alkaline batteries |
| Receiver Type | E |
UK Series
Model: SF-2D+4SP(UK)
Industry Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 215mm * 70mm * 45mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 2 dual-speed + 4 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 2 AA alkaline batteries |
| Button Type | Mechanical button |
| Waterproof Rating | IP66 |
Model: SF-6SS(UK)
Industry Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 215mm * 62mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 6 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 2 AA alkaline batteries |
| Button Type | Mechanical button |
| Waterproof Rating | IP66 |
Model: SF-8SS(UK)
Industry Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 215mm * 70mm * 45mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 8 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 2 AA alkaline batteries |
| Button Type | Mechanical button |
| Waterproof Rating | IP66 |
Model: SF-12SP(UK)
Industry Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 265mm * 62mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 12 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 2 AA alkaline batteries |
| Button Type | Mechanical button |
| Waterproof Rating | IP66 |
Model: SF-6DP(UK)
Industry Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 215mm * 70mm * 45mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 6 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 2 AA alkaline batteries |
| Button Type | Mechanical button |
| Waterproof Rating | IP66 |
Model: SF-8DP(UK)
Industry Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 215mm * 70mm * 45mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 8 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 2 AA alkaline batteries |
| Button Type | Mechanical button |
| Waterproof Rating | IP66 |
Model: SF-10DP(UK)
Industry Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 265mm * 62mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 10 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 2 AA alkaline batteries |
| Button Type | Mechanical button |
| Waterproof Rating | IP66 |
Model: SF-12DP(UK)
Industry Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 265mm * 62mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 12 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m—150m |
| Power Supply | 2 AA alkaline batteries |
| Button Type | Mechanical button |
| Waterproof Rating | IP66 |
Rechargeable Series (IP67)
Model: SF-6S(C)
Wireless Radio Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 6 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m–150m |
| Power Supply | Lithium battery |
| Continuous Operation Time | ≈450 hours |
| Button Type | Authorization card/password |
| Waterproof Rating | IP67 |
Model: SF-8S(C)
Wireless Radio Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 8 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m–150m |
| Power Supply | Lithium battery |
| Continuous Operation Time | ≈450 hours |
| Button Type | Authorization card/password |
| Waterproof Rating | IP67 |
Model: SF-10S(C)
Wireless Radio Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 10 single-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m–150m |
| Power Supply | Lithium battery |
| Continuous Operation Time | ≈450 hours |
| Button Type | Authorization card/password |
| Waterproof Rating | IP67 |
Model: SF-6D(C)
Wireless Radio Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 6 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m–150m |
| Power Supply | Lithium battery |
| Continuous Operation Time | ≈450 hours |
| Button Type | Authorization card/password |
| Waterproof Rating | IP67 |
Model: SF-8D(C)
Wireless Radio Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 230mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 8 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m–150m |
| Power Supply | Lithium battery |
| Continuous Operation Time | ≈450 hours |
| Button Type | Authorization card/password |
| Waterproof Rating | IP67 |
Model: SF-10D(C)
Wireless Radio Remote Control Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 275mm * 63mm * 40mm |
| Shell Material | Corrosion-resistant fiberglass nylon |
| Emergency Stop Type | Rotary self-locking bistable emergency stop |
| Number of Action Buttons | 10 dual-speed action buttons |
| Transmitting Frequency | 433MHz |
| Transmitting Distance | Open area 100m–150m |
| Power Supply | Lithium battery |
| Continuous Operation Time | ≈450 hours |
| Button Type | Authorization card/password |
| Waterproof Rating | IP67 |
Receiver Series (IP68)
Type C Receiver
Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 154 * 78 * 56mm |
| Shell Material | ABS+PC |
| Antenna | Built-in |
| Receiving Sensitivity | ≤-110 dbm |
| Frequency | 433Mhz/868Mhz/915Mhz |
| Input Voltage | AC/DC 36V-440V, 50/60Hz; Customizable voltage |
| Temperature Range | -20℃ ~ +60℃ |
| Protection Class | IP68 |
| Cable Length | 1.3m |
Type D Receiver
Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 175 * 95 * 60mm |
| Shell Material | ABS+PC |
| Antenna | Built-in |
| Receiving Sensitivity | ≤-110 dbm |
| Frequency | 433Mhz/868Mhz/915Mhz |
| Input Voltage | AC/DC 36V-440V, 50/60Hz; Customizable voltage |
| Temperature Range | -20℃ ~ +60℃ |
| Protection Class | IP68 |
| Cable Length | 1.24m |
Type E Receiver
Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 188 * 166 * 80mm |
| Shell Material | ABS+PC |
| Antenna | External |
| Receiving Sensitivity | ≤-110 dbm |
| Frequency | 433Mhz/868Mhz/915Mhz |
| Input Voltage | AC/DC 36V-550V, 50/60Hz; Customizable voltage |
| Temperature Range | -20℃ ~ +60℃ |
| Protection Class | IP68 |
| Cable Length | 1.6m |
Type F Receiver
Parameters
| Item | Parameter |
|---|---|
| Appearance Dimensions | 166 * 156 * 92mm |
| Shell Material | ABS+PC |
| Antenna | External |
| Receiving Sensitivity | ≤-110 dbm |
| Frequency | 433Mhz/868Mhz/915Mhz |
| Input Voltage | AC/DC 36V-550V, 50/60Hz; Customizable voltage |
| Temperature Range | -20℃ ~ +60℃ |
| Protection Class | IP68 |
| Cable Length | 1.3m |
Innovative Technology: Frequency Conversion Control Terminal
With nearly 20 years of R&D experience, Seif has innovatively launched China's first wireless control terminal specifically designed for crane frequency converters. This product breaks through the traditional relay cascade control mode, adopting a single-chip microcomputer to output command signals compatible with the frequency converter bus. It achieves parallel control of multiple frequency converters through a single control bus, eliminating redundant links such as traditional receivers and intermediate relays.
Technical Advantages:
- Highly Integrated: Bus protocol directly transmits commands, eliminating mechanical contact life limitations, and improving system stability by 300%.
- Cost Revolution: Cable usage reduced by 80%, installation and maintenance costs reduced by 65%, making it a low-cost solution for intelligent upgrades.
- Patent Protection: National Utility Model Patent obtained. Full protocol transmission with no mechanical contact wear, significantly extending service life.
- Flexible Adaptation: Supports parallel operation of multiple brands of frequency converters. Four-core cable achieves synchronous voltage, phase, and frequency.
- Optimized Structure: The receiving terminal is made of high-pressure die-cast aluminum, reducing volume by 40% compared to traditional equipment, adapting to complex industrial environments.
As a landmark innovation in China's industrial wireless control field, this terminal has been successfully applied in over ten industries, including metallurgy, logistics, and construction, helping enterprises achieve a three-level leap from "mechanical automation - digital informatization - intelligent IoT-ization."
User Notice
Quality Assurance & Warranty Commitment
- Quality Assurance: The information contained in this document is a general description of product performance. Users or integrators are responsible for conducting appropriate and complete risk analysis, evaluation, and testing for specific product applications.
- Warranty Commitment: This product enjoys a 12-month warranty period from the date of delivery. During the warranty period, our company promises to repair any non-human caused failures. Products requiring repair must be sent to our company's designated repair point. The warranty does not cover consumable parts such as relays, fuses, batteries, dust covers, receivers, and lead cables, nor does it cover failures caused by improper use or unauthorized modifications by the customer.
Safety Instructions
Purpose:
- This wireless remote control system is used for controlling machines and data transmission.
- Strictly prohibited for use in areas with explosion hazards, and strictly prohibited for controlling machines used for carrying people (unless explicitly approved by the manufacturer).
- Strictly prohibited to modify, dismantle, or bypass safety devices in the wireless remote control system without authorization.
Precautions:
- Always check the transmitter casing and buttons; replace immediately if damaged.
- Always pay attention to and check the transmitter voltage; replace batteries immediately if power is low.
- Always check if the emergency stop button is functioning normally before operation.
- In case of any abnormality, immediately press the emergency stop button.
- Do not use two (or more) transmitters simultaneously to operate the same equipment.
- Do not use the same frequency within the same factory area (or within 300 meters) to avoid mutual interference.
Installation & Operation Safety Notice:
- Only professional electricians can connect the power supply to the receiving system.
- Choose a safe operating position with good visibility of the machine, load movement, and surrounding working environment.
- When remote control operation is not needed, press the emergency stop switch of the transmitting system and turn off the transmitting system.
- Properly manage the transmitting system, such as locking it, to prevent unauthorized use.
- In case of emergency or malfunction of the crane and machine, immediately press the emergency stop switch on the transmitting system.
- Maintenance must be performed by professionals authorized and trained by Seif Technology, using original spare parts.
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