Features: Stronger anti-interference, lower power-wear and longer-using life. Based on the infrared sensing, it can alarm the invader when movement is detected. The sensor will alarm with 105 dB when some one moves within the detecting area. Easy to install and operate. It can remotely control the switch without sound. The intelligent time-delay design is supposed to be more suitable for the place without a guard. Specification: Material: Plastic Weight: 242g/8.5oz Color: White Detection Distance: 8 meters Detection Angle: 105 degrees Alarm Sound: 105dB Battery: 4* AA batteries, DC 6V (NOT Included) Alarm Size: 8.2*4*12cm/3.2*1.6*4.7inch Remote Control Size: 5.8*3.4*1.5cm/2.3*1.3*0.6inch Package List: 1 x PIR Alarm 2 x Remote Control 1 x Mounting Bracket Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1、Stronger anti-interference, lower power-wear and longer-using life. 2、Based on the infrared sensing, it can alarm the invader when movement is detected. 3、The sensor will alarm with 105 dB when some one moves within the detecting area. 4、Easy to install and operate. It can remotely control the switch without sound. 5、The intelligent time-delay design is supposed to be more suitable for the place without a guard.