Honeywell 951WG(Wired Door & Window Alarm Contacts)
FEATURES:
• 1 in. long magnet, it is ideal for casement windows, sliding windows and thin frame applications
• More powerful Alnico 8 magnet for up to 7/16 in. (11mm) gap
• Monitors the opening and closure of doors and windows
• Can be added to a wireless home security system with video surveillance cameras and more