F21-e1b Dc12-72v Industrial Remote Control Switch Hoist Crane Controller Elevator Remote Control One Send One Receive Made of high quality materials, convenient, easy to use and operate, wide range of applications, long service life. Features: The transmitter has 8 function keys (6 single speed keys and 1 start key and 1 stop key). The number of transmitter control points can be up to 8. The transmitter has a security key switch to prevent unauthorized use. The transmitter can be connected to the computer via the data cable to set the button function mode. The transmitter has a low battery warning device and the voltage is insufficient to automatically turn off the circuit. The nylon fiber case is comfortable to the touch, sturdy and drop-resistant, waterproof, anti-corrosion and insulated. Transmitter and receiver boards with crystal oscillator for stable performance. IP65 protection level, waterproof, dustproof, drop-proof, can adapt to different environments. With wireless antenna technology, the signal is stronger and the power consumption is lower. The external antenna avoids the signal shielding of the body. The receiver is supplied with a high quality pure copper cable that is 1.3 meters long and has a purity of 99.9 percent . The color is bright and clear, and it is equipped with a U-shaped terminal block for quick wiring. 360 degree accessible remote control, 5.0 remote control system, strong penetration, no need to aim. Specifications: Main Material: Fiberglass Reinforced Nylon Main Color: Orange and Black Type: F21-E1B Transmitter: Protection Level: IP65 Transmitting Power: 10dBm Battery: 2xAA batteries (not included) Code: 32 digits ( 4.3 billion groups) Temperature: moderate temperature Control distance: 100 meters Item size: 165x75x46mm/6.5x3.0x1.8in Item weight: 279g/9.8oz Receiver: Protection level : IP65 Receiving distance: 100 meters Sensitivity: -110dBmCode: 4.3 billion codes, not commonTemperature: moderate temperatureElectric shock capacity: 8 amp fully sealed relay inputPower: DC12-72VItem size: 190x88mm/ 7.5x3.5inItem Weight: 655g/1.4lbPackage Size: 310x210x170mm/12.2x8.3x6.7in Package Weight: 1259g / 2.8lb Package List: 1 x Transmitter1 x Receiver1 x Protective Case2 x Fuse