4 Channel 433 MHZ Wireless RF Remote Control Controller for Car Alarm Frequency:433 MHZ(150kHz(max) Operating Current: 10mA@12V.Transmitting Power:10mW@12V.Sensitivity: -108dBm Modulation mode: ASK(AM) Encoding type: Fixed code Transfers distance: 80m (100-200m to the max for open spaces)