Features: It can receive the 433 signal from the door magnet or infrared and make an audible and visual alarm. Tamper alarm function: If it is demolished, it will issue an alarm. Wireless learning code: Add new accessories, convenient, safe and efficient. Set of remote control, remote control out, arming at home, emergency alarm, quick disarming. The built-in battery provides power and is quick and easy. Specifications: Condition: Brand New Color: Shown as Picture Material: ABS Sound and Light Siren: Power Input: DC5V 500MA Standby Power Consumption: ≤12.5mA Alarm Current: ≤200mA Wireless: 433 Coding Mode: SC2262 IC/4.7MΩ or EV1527 IC/270KΩ Backup Battery: 3*AAA Batteries, 1.5V Applicable Temperature: -20 ° C -50 ° C Applicable Humidity: 40%-80% Alarm Sound: ≤110dB Infrared Detector: CMOS Low power microprocessor Built-in million encoding Omnidirectional automatic temperature compensation Working Voltage: 1.5V two AA batteries; quiescent current: ≤20uA Emission Current: ≤25mA; emission distance: ≥150m Launch Mode: 433 Detection Distance: 12 m / 8 m (wide angle / curtain) Detection Angle: 110° Ambient Temperature: -10 ° C ~ 50 ° C Package List: 1 * Sound and Light Alarm (built-in 3 AAA batteries and a manual and a power cord and a rubber pad) 3 * Infrared Detector (two infrared AA and one manual for each infrared, one set of mounting screws, two plastic parts) 1 * Remote Control (built-in one CR2032 button battery) 1、It can receive the 433 signal from the door magnet or infrared and make an audible and visual alarm. 2、Tamper alarm function: If it is demolished, it will issue an alarm. 3、Wireless learning code: Add new accessories, convenient, safe and efficient. 4、Set of remote control, remote control out, arming at home, emergency alarm, quick disarming. 5、The built-in battery provides power and is quick and easy.