Feature:1. Application: Suitable for electric cranes such as bridge cranes, top cranes, chain cranes, monorails, concrete pump trucks, mobile lifts, tower cranes, etc., and mini electric cranes.2. Use With Contactor: The remote control needs to be used with a contactor, cannot be directly connected to the power supply. Direct connection to the power supply will damage the motherboard.3. ABS Shell: ABS shell, comfortable to touch, strong and rolling prevention ability, waterproof, corrosion resistance and insulation.4. Smart Wireless Technology: Smart wireless technology, the signal has non fear of interference, strong penetrating power, and stable signal.5. IP68 Protection Level: This industrial remote control has an IP68 protection level, and the control distance is 100m in an open environment.Specification:Item Type: Industrial Remote ControlMaterial: ABSModel: YU-2STemperature Range: -5~85Radio Frequency Point: 800MHzProtection Level: IP68Control Distance: Approx. 100m / 328.1ft (In Open Environment)Adapter Battery: 1.5V AA Battery x 2 (Delivered without battery).Package List:2 x Remote Control 1 x Transmitter 2 x Protective Cover2 x Fuse 1 x User Manual Note:Do not disassemble at will, there may be a risk of electric shock.