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.Item Type: Industrial Remote ControlProduct Material: ABSProduct Model: YU-4STemperature Range: -5-85Radio Frequency Point: 800MHzProtection Level: IP68Control Distance: Approx. 100 meter / 328.1ft (open environment)Battery: 2 x AA 1.5V batteries (not included) Package List1 x Remote Control1 x Transmitter1 x Protective Case2 x Fuse1 x User ManualNoteDo not disassemble the product at will, as there may be risks of electric shock.