Feature: 1. WIDE APPLICATION: The kit includes industrial remote control and transmitter, which can be used for electric hoist cranes. 2. PROTECTION FUNCTION: With protective functions such as splashing, dust, shock, magnetic, static prevention, etc. 3. ABS SHELL: The transmitter shell is made of excellent ABS material, with high strength and impact resistance. 4. WIRELESS TECHNOLOGY: Using smart wireless technology, has strong penetrating power, stable signal and convenient operation. 5. CONTROL DISTANCE: The control distance can be up to 100 meters in an open environment, with strong practicability. Specification: Item Type: Industrial Remote Control Product Material: ABS Product Model: YU-4S Temperature Range: -5-85℃ Radio Frequency Point: 800MHz Protection Level: IP68 Control Distance: Approx. 100 meter / 328.1ft (open environment) Battery: 2 x AA 1.5V batteries (not included). Package List: 1 x Remote Control1 x Transmitter1 x Protective Case2 x Fuse1 x User Manual Note: Do not disassemble the product at will, as there may be risks of electric shock.