Made of high quality materials, practical, easy to operate and operate, wide application range, long service life. Features: The transmitter has 8 function keys (6 single speed keys + 1 start key + 1 stop key).The number of control points on the transmitter can be up to 8. The transmitter has a safety 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 touch, strong 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 signal shielding from the body.The color is bright and clear, and it is equipped with a U-shaped terminal block for quick wiring.