" " Overview: PIR sensor adopts digital fuzzy infrared control system and intelligent analysis algorithm; It can tell the interference signal and the human movement signal to avoid fault alarm. In addition, it has temperature compensation and air flow technology to get used to the changing environment. The device has the Environment friendly features, security and easy installation. It can reflect the low voltage automatically to help the GSM alarm to send a low voltage message to the users. The product is suitable for housing estate, villa, factory, warehouse, office building and so on. features: * Adopt low power consumption CMOS microprocessor * Low power consumption, battery with longer life * Millions of built-in codes * Digital wireless signal transfer * Low voltage alert function * All around automatic temperature compensation * Intelligent logic analysis to avoid fault alarm * Anti white light * Anti high interference Characteristics: Operating voltage: 1.5 V 2 * AAA battery Operating current: ≤25mA Static current: ≤15uA Transmission frequency: 433Mhz (ASK) Transmitting power: ≤10dB Transmission distance: ≥262ft (outdoor) Detection range: 26ft-39ft (25?) Operating temperature: -10? ? -55 Installation way: Wall hanging Installation Height: 6-7feet (Focus on the center of the detector) Degree Detection: 110 ° Item weight: approx. 39g / 1.4oz Item size: approx. 4 * 2.9 * 10.5cm / 1.57 * 1.14 * 4.13in (L * W * H) Package size: approx. 6.1 * 3.8 * 11.0cm / 2.4 * 1.50 * 4.33in (L * W * H) Total weight: approx. 85g / 3.0oz Quantity: 1pcs List of packages: 1 * PIR detector (battery included) 1 * Mounting bracket 1 * Bag of accessories 1 * Mannual user " "