Sell (10pcs) Door/Window Contact Magnetic Switch Alarm Device Sensor best price

Features: Material: ABS Dimensions: 27(mm)X14(mm)X8(mm) Switch pattern: N/C normally closed, alarm-on-broken Contact capacity: Maximum switch current: 0.5Amp Voltage: DC100V Rated power:10W Actuation distance:5-15mm Wire lead: 24 Awg, About 350mm long Mounting method: SMD (by screws or double-sided tapes) Recommendations in application: wooden door, window Brand new and high quality 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. Package Included: Magnetic Contact - 10pcs