Reliable 433 MHz technology Small, compact design 1 pre-installed lithium battery with activation pull tab (included) 5/8” (16 mm) maximum magnet gap Smooth-back plastics to apply doubled-sided tape (included) Case and wall tamper (without using any mechanical springs) PCB antenna PCB mounted on the cover for easy installation Built-in reed switch Normally closed external contact input UL/ULC listed for North America; CE and RoHS compliant for Europe DSC WS4945 SPEC SHEET
