BOSCH, Radion Series, Wireless reed switch, For doors/windows, Surface mount, Suits RFRC-STR2, RF3212E, B810 & RF120 receivers, 433MHz

An internal magnetic reed switch contact. Supervised for low-battery, cover-tamper, and removal from mounting surface tamper conditions. Up to 5yrs operation via 1x user replaceable AAA Lithium battery.