This is a dual channel transmitters that are activated only after having entered a Suitable combination. The units are designed for installation in indoor or outdoor locations that ensures the utmost security because the transmitted code is changed at each transmission session. The estimated transmission range is 200 m in open space and 35m indoors. The units are designed to ensure battery life equivalent to an estimated 2 years of oper-ation considering 10 transmissions/day. Power:6Volt DC 2PCS CR2032 Li battery Battery life:2 years(4 times operation every day) Frequency:433.92MHz+/-75KHz Transmitter power:1Mw Data format:standard Work temp:-20~+55 centidegree Password number:0-8 Water proof level:1p54 Weight:150g 433 MHz receiver Power supply: 12v-24v DC Frequency: 433.92Mhz Codes: can work with any fixed/learning/rolling codes 2 channel Working temperature :-40 Celsius- + 80 Celsius Built in Aerial antenna : Reception range 10-50m ANT - Receiver Antenna CH1 - Relay Output 1 CH2 - Relay Output 2 V+ - Voltage + GND - Ground 433 MHz remote control Operating frequency: 433.92MHz Usage: For 433Mhz RF receiver 1527 decode This remote control only support the learning code (1527) of the receiver Note: This is not a clone remote. Cannot clone other remotes. Colour: black + gray Material: plastic + metal Package Contents: 1 * Keypad Password Switch 1 * Receiver 1 * Remote Control 1 * English Manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.