The PIR Model ITR is a wireless indoor motion detector designed for use in security systems. It detects motion within a range of 12 meters and 90 degree angle. It is powered by a lithium battery that can last up to 4 years and transmits system status checks every 8 minutes including its ID code, sensor state, tamper condition and battery level. It has a dual tamper detection system and approvals for CE and FCC standards.