1. Compact and beautiful appearance design; 4-key control 2. Using wireless radio frequency technology, the transmission distance is long, non-directional, high transmission sensitivity and no signal obstruction 3. With LED working status indication 4. Application:Family/mall anti-theft alarm system; All kinds of doors and electric car, car, motorcycle, car alarm, controller and other industrial control. Working voltage:DC12V Voltage:CR2032 Current:less than equal 12mA Frequency:868mhz Power: equal 10mW Distance:50-100meters Frequency deviation:±0.2MHz Transmission speed:50-60KHZ Chip:copy code (face to face) Work Temperature:-20℃-70℃ Storage Temperature:-10℃-50℃ Compatible Models: For HS1-868-BS For HS4-868-BS For HS5-868-BS For HSS4-868-BS For HSE1-868-BS For HSE2-868-BS For HSE4-868-BS For HSP4-868-BS For HSD2-868-BS Colour:Black & Silver Material:Plastic+Metal Package Contents: 1 * Remote Control Only the above package content, other products are not included. Note: Light reflection 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.