NV37M Outdoor / Indoor Window and Sliding Door Dual Detector with Anti-Masking and Pet Immunity. TheNV37M Paradox Outdoor / Indoor Window and Sliding Door Dual Detector provides an excellent outdoor and indoor solution for window and sliding door protection with two operation modes: Pet Immune Mode 7.5 x 2m (25 x 7 ft) and Sharp Mode (indoor use) 10 x 2m (33 x 7 ft) with dual verification detection.
eBay