Wireless transmitter to install in standard wall electrical box, with 4 channels. Fit for blinds and awnings. Frequency: 433.92 MHz. Modulation: AM / ASK. Coding: Keelog Rolling Code. Compatible with all CDVI® receivers. Up to 200m (in open field). Dimensions: 80 x 80 x 15 mm. Requires 1 CR2032 battery.