Description:1.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, check carefully!2.These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system.3.Work as an anti-theft alarm, perfect for metal door and window. Specification:Product Name: Magnetic Door SwitchModel: HC-34AContact Type: NC (Normally Closed)Actuation Distance: 10-15mmMax. Current: 0.3AMax. Contact Power: 3WWorking Voltage: DC28VSize(Approx): 14 x 6.5mm, 12 x 6mm(H*W) Cable Length(Each): 25cm / 9.
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Specifications:Product Name : Magnetic Door SwitchContact Type : NC, Normally CloseContact Capacity : 0.5A(Maximum Switch Current)Voltage : DC 100VRated Power : 10WAction Distance : 10（+/-5）mmEach Size(Approx) : 64 x 13 x 13mm / 2.5" x 0.51" x 0.51"(L*W*H)Mounting Hole Dia. : 4mm/ 0.16"Wire Length(Each) : 27cm/ 10.6" Color : White HousingMaterial : ABSWeight : 199g package Content : 10 Sets x Magnetic Switch 40 x Installation Screws Description:Screw surface mount contact, white ABS housing. 27cm long wire lead that is side mounted. Comes with forty installation screws.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,please check carefully!.
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Descriptions: Switch Type: NC(normal closed type), the circuit is closed normally, and, that if a magnet not near it, the circuit open. 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. . It consists of a pair of contacts on ferrous metal in a hermetically sealed glass envelope. There are two types of reed switches: normally open reed switches and normally closed reed switches. The metal 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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Normally closed type: When the magnet and reed switch are together, they are in a conductive state (NC). Normally open: When the magnet and reed switch are together, they are in the off state (NO). Door magnetic switch (Set) 1.
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5 Door magnet switch. Switch output: normally closed/normally closed (optional). Model: MC-31 (normally closed)/MC-31B (normally open) (optional). Product Introduction. Raspberry Pi. Arduino Module. Electronic Component.
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We will get back to you as soon as possible. We believe that there is no problem that cannot be solved by communication. Your kindly understanding and great patience would be highly appreciated! We are located in the industrial center of China and have high-quality suppliers.
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Type: Magnetic. Must Release: 12 to 25 mm. Must Operate: 7 to 12mm.
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Thesurface-mount magnetic door sensor uses a durablePVC housing for enhanced rust resistance and long service life. With a compact size and30cm wired connection, thiswired reed switch sensor is easy to install and ideal for indoor security systems.
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