1 set Window or Door Contact Magnetic Reed Switch Alarm Sensor Free Shipping

The reed switch is an electrical switch operated by an applied magnetic field. It was invented at Bell Telephone Laboratories in 1936 by W. B. Ellwood. It consists of a pair of contacts on ferrous metal reeds in a hermetically sealed glass envelope. 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.

Features:

Mounting method: SMD (by screws or double-sided tapes)

Dimensions: 27(mm)X14(mm)X7.6(mm)

Switch pattern: N/O normally open, alarm-on-broken

Contact capacity: Maximum switch current: 0.5Amp

Voltage: 100 VDC

Rated power:10W

Actuation distance:12-24mm

Material: Nd magnetic

Wire lead: 22 Awg, 300mm long

Color: white

Housing: ABS

Recommendations in application: wooden door, window

Package Contents:

Reed switch x1