SONOFF DW1 433Mhz Door Window Sensor Compatible With RF Bridge For Smart Home Alarm Security<br /><br />Support Battery: 12V 23A<br />Wireless Frequency: 433.92MHz<br />Protocol: EV1527<br />Quiescent Current: ≤5μA<br />Emission Current: ≤10mA<br />Operating Environment: -10℃-50℃ (14℉-122℉)<br />Product Size(L*W*H): 77 x 49.5 x 18.8 mm<br />Battery: L 27mm， Dia.10mm<br />(This model doesn’t come with battery)<br /><br />Features:<br />Built-in antenna provided.<br />200m wireless transmit distance.<br />Less than 1μA quiescent current.<br />Supports wireless frequency of 433.92MHz.<br />Ultra-low power magnetic dedicated microprocessor.<br /><br />Package Included:<br />1 x SONOFF® DW1 433Mhz Door Window Sensor<br /><br />Notes:<br />1.Manual measuring， please allow 1 ~ 5 mm error，thank you.<br />2.This model doesn’t come with battery.<br />3.Due to the difference between different monitors， the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.Please understand， thank you!