Buy Ademco Honeywell 5820L Slimline Door / Window Contact Transmitter supplied with Lithium battery
Honeywell's 5820L Slimline Door/Window Contact Transmitter is nearly half the size of standard door/window transmitters. It is ideal for casement and double-hung windows. The 5820 provides a single zone of protection, and installs easily on doors or windows with the included mounting hardware or double-sided adhesive tape.
Features: