Recessed Door Window Contacts Magnetic Reed Security Alarm Switch

Description : Recessed Door Window Contacts Magnetic Reed Security Alarm Switch Screws Features : Easy installation . Reliable performance . Good characteristic of abrasion-proof . Best Choice for you to protect family . There are two types of reed switches : "normally open" reed switches and "normally closed" reed switches. The metal reeds on a normally open switch stay open when there is no magnet near the switch. In the presence of a magnetic field, the contacts of a normally-open reed switch will close. A normally-closed reed switch is closed when it is not near a magnet; as a magnet is brought close to it, a normally-closed switch will open. Specifications : Color : white Material : ABS Dimensions : 27mm x 14mm x 8mm Switch pattern : N/O normally open, alarm-on-broken Contact capacity : Maximum switch current : 0.5Amp Voltage : 200V DC Rated power : 10W Actuation distance : 20-25mm Wire lead : 22 Awg, About 350mm long Mounting method : SMD (by screws or double-sided tapes) Recommendations in application : wooden door, window Package Includes : 1 x Reed switches 1 x Necessary screws for installation Details pictures :