Standard magnetic door sensors 12 volt battery included 0.01w stand by current 12v dc battery power supply online technical support 1 yr. Warranty technical specification power supply dc12v battery working frequency 315mhz433mhz gap for triggered >>15-20mm stand-by current 0.01w alarm current 0.09w rf output of power 5mw working temperature 10 ~ 50 size 80x50x 16mm warranty 1 year