Dual PIR sensor. Two lens covers for curtain effect and test buzzer supplied, two-colour LED indicators for monitoring, pet-immune. Maximum coverage 12 m, installation height 80cm to 2.5m, "or", "and" and "directional and" logic, operating temperature -40 to +70°, IK10 impact protection, high immunity to solar shadow, bi-directional wireless transmission, advanced-security RF protocol, transmission frequency 868 MHz, ''open/closed contact'' transmission, ''open/closed tamper'', range up to 500 m in open spaces, unique ID code, front and rear tamper, low-energy technology, powered by 9V battery(in equipment). Dimensions 190 x 85 x 75 mm. COMPATIBLE EXCLUSIVELY WITH RADIO MODULE 30003201C, VEDO FULL RADIO, EASY SAFE FULL RADIO