Linear Hondwa01BR Honeywell Wireless Door or Window Slim ContactsNEW in factory sealed boxes Free standard shipping - other faster options available Most orders shipped same day if paid by 4 pm ET Compatible with Ademco Honeywell 5800 Series Wireless Receivers WORKS WITH ALL HONEYWELL LYNX AND VISTA SYSTEMS. BATTERIES, MAGNET, AND MOUNTING SCREWS AND DOUBLE SIDED TAPE ARE INCLUDED! SLIM DESIGN - 7/8" GAP - INTERNAL MAG SWITCH EXTERNAL N/C LOOP