buy Alarm System Dahua ARD1233-W2-868 Wall mounting . The ARD1233-W2-868 from Dahua is a wireless detection alarm system that provides an effective solution for home or business security. This device features a passive infrared (PIR) sensor with a detection range of up to 12 meters and a wide 90º angle, allowing it to accurately cover significant areas. It also includes a pet immunity function that prevents false alarms caused by small animals, ensuring reliable operation. It operates at a frequency of 868 - 868.6 MHz, optimizing wireless communication for easier and more flexible installation. Its compact and discreet design, measuring 60 mm wide, 51 mm deep, and 104 mm high, allows wall mounting without being intrusive. Made from durable materials such as acrylonitrile butadiene styrene (ABS) and polycarbonate (PC), its casing ensures protection against impacts and harsh conditions. Powered by a CR123A battery with an approximate lifespan of 4 years, it minimizes maintenance needs and guarantees continuous, reliable performance. Its light weight of 200 grams also contributes to easy handling and installation. This unit comes in white and is delivered in a compact package for convenient transport and storage. Overall, the Dahua ARD1233-W2-868 offers an advanced and practical solution for wireless security systems, ideal for those seeking an efficient, durable, and easy-to-integrate PIR detector in any environment. Type: Alarm SystemColour: WhitePower supply: Electric cableWeight: 200 gType of Installation: Wall mountingWorking range for humidity: 10 % - 90 %Battery type: CR123A