Door sensor is used for sensing the opening state of the door, and is consisted of transmitter and magnet two parts. It can be installed on doors,windows or any object that can be closed and opened. When transmitter is separated from the magnet, door sensr will send 433mhz alarm signal to solar siren, which trigger an alarm. The solar siren sound and flash on spot to inform the alarming. When the motion sensor detects human motion movement, it will send 433mhz alarm signal to solar powered siren, which trigger an alarm. The solar siren will sound and flash on spot immediately to inform the alarming. Specification of solar siren External Power Input: DC5V/1A, Solar Panel Output: 5.0V, Standby Current:＜1 mA, Alarm Current:＜150mA, Sound Level:＞100dB, about 110db Wireless Frequency: 433MHz, Wireless Reception Range: about 100m in open space, no obstacle Water Resistance: IP65, Wireless Coding: EV1527/2262 supported, Backup Battery: 3.7V 1000mA Lithium battery, Working Temperature: -20°C - 55°C, Working Humidity: 40%-80% no condensing , Form Factor: 164.3×124.3×59mm Specification of wireless door window sensor Size of transmitter: L:6cm *W:2.4cm * H:1.2cm L:2.36 * W:0.94 * H:0.47 Inch Magnetic Part: L: 4cm * W:1.0cm * H:1.2cm L:1.57 * W:0.39 * H:0.47 Inch Power Supply: 3V Lithium Cell battery, CR2032 Wireless Radio frequency: 433mhz Chip Cod Form: EV1527 with 330K resistor Transmission Distance: About 20 to 40M indoor;100m in open area no obstacle Specification of wireless PIR motion sensor Powered by 2pcs of 1.5V AAA battery but battery not included） Wireless Radio frequency: 433mhz Chip Code Form: EV1527 Transmission Distance: about 20 to 50M indoor;100m in open area no obstacle Detection Range: Horizontal 110°, Vertical 45° to 60° Detection Distance: about 6 to 10M Installation Height: 1.8 to 2.5m 2.2m is recommended