The battery-powered iSeries EX-35Ri is a low cost indoor PIR with an Inovonics EN1941 transmitter and battery pre-installed. You can select between precise wide angle and long range coverage, and also multi-level or pet alley detection patterns. By incorporating our patented multi-focus technology into the spherically designed lens, the EX-35Ri has successfully eliminated sensitivity problems caused by changes in detection patterns. Applications Buildings Key Features Selectable 35 x 35ft / 55 x 5.5ft detection pattern Spherical fresnel lens design Patented multi-focus technology Tamper proof