

Sourcingmap 5 x Door Window Normal Closed Contact Alarm Magnetic Reed Switch Sets
About this item
- Product Name : Magnetic DoorSwitch;Contact Type : NC(normal closed type);Rated Voltage : DC 100V
- Rated Current : 500mA;Operating Distance : 17mm-25mm
- Each Size(Approx) : 64 x 20x 13mm / 2.5" x 0.8" x 0.51"(L*W*H)64 x 13 x 13mm/2.5" x 0.5" x 0.5"(L*W*H);Mounting Hole Dia. : 4mm/ 0.16"
- Color : White;Housing Material : ABS
- Net Weight : 117g;Package Content : 5 x Magnetic DoorSwitch SetsInstallation Screws
Product description
NC means Normally Closed:When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ). When make order,pls check carefully! 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.
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
The package was here in Australia from England in a few days โ so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
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