This small one-channel transmitter converts to a standard switch to a radio switch. It is ideal for mounting exit buttons or other devices. Thanks to the 9V battery power, the range reaches 1000 meters.Dimensions (L x W x D): 45 x 28 x 6 mm. Battery cable: 200 mm. Modulation: AM/ASK. Coding: Keeloq® Rolling Code. Effective transmitting power: 10 mW. Power supply: 9V (Battery 6LR61). Consumption: 17 mA. Can convert a contact into an RF signal. Frequency: 433.92 Mhz. 1 channel. Range: up to 1000 meters in open field.