Made of fine quality material, practical, easy to operate and use, wide application range, has a long service life. Features: The transmitter has 8 function buttons (6 single speed buttons + 1 start button + 1 stop button). The number of control points of the transmitter can be up to 8. The transmitter has a safety key switch to refrain unauthorized use. The transmitter can be connected to the computer through the data cable to set the button function mode. The transmitter has a battery voltage warning device, and the voltage is insufficient to automatically turn off the circuit. Nylon fiber housing feels comfortable, strong and resistant to falling, waterproof, anti-corrosion, insulation. Transmitter and receiver boards with crystal oscillator for stable performance. IP65 protection level, waterproof, dustproof, anti-fall, can adapt to various environments. With wireless antenna technology, the signal is stronger and the power consumption is lower. The external antenna avoids shielding the signal from the body. The receiver comes with a fine quality pure copper cable with a length of 1.3 meters and a purity of 99.9%. The color is bright and clear, and it is equipped with a U-shaped terminal block for quick wiring. 360 degree barrier-free remote control, 5.0 remote control system, strong penetration, no need to aim. Specifications: Main material: glass fiber reinforced nylon Main color: orange+black Type: F21-E1B Transmitter: Protection level: IP65 Transmit power: 10dBm Battery: 2 * AA battery (not included) Code: 32 digits (4.3 billion groups) Temperature: moderate temperature Control distance: 100 meters Item size: 165 * 75 * 46mm / 6.5 * 3.0 * 1.8in Item weight: 279g / 9.8ounce Receiver: Protection level: IP65 Receiving range: 100 meters Sensitivity: -110dBm Code: 4.3 billion codes, no common Temperature: moderate temperature Electric shock capacity: 8 amp fully sealed relay input Power: DC12-72V Item size: 190 * 88mm / 7.5 * 3.5in Item weight: 655g / 1.4lb Package size: 310 * 210 * 170mm / 12.2 * 8.3 * 6.7in Package weight: 1259g / 2.8lb Package list: 1 * Transmitter 1 * Receiver 1 * Protective Cover 2 * Fuse