The PIR house alarm infrared sensor and remotes set combines advanced infrared detection and signal processing to provide outstanding catch performance with a lightweight and portable design. Utilizing infrared sensor processing chip, PIR dual element pyroelectric infrared sensor, advanced digital remote sensing technology, micro-power ASIC and automatic temperature compensation, the high sensitivity infrared sensor is able to automatically detect if the intruder enters the monitoring range with no sound, light or movement provided, even at night time. With detection distance of about 5-8 m, it is practical, affordable and versatile, and is ideal for deterrence of theft in many places. Highlights: All in one remote control, infrared alarm and infrared detectors Wireless, infrared detector, motion-activated Advanced integrated design 2 direct infrared remote control Long-range multi-channel wireless remote control Alarm sound level: 105dB (decibels) 110 degree wide angle Adjustable mounting unit Remote control distance of about 5-10 m Detection range: detection distance of about 5-8 m The motion detector powered by 4 AA batteries (not included) The remote control powered by 3 AG13 batteries (included)