The door contact sensor is a magnetic field electrical switch that provides a high-pitched alarm when someone opens a door or window when it is closed, thus protecting your home.SpecificationColor: GreyMaterial: Zinc AlloySize: Cable Length: 380 mm / 14.96 inchMaximum Current: 0.5AMaximum Voltage: 0-100VSensing Distance: 50-70 mm / 1.97-2.76 inchMagnetic Sensor 1: 10 x 4.8 cm / 3.94 x 1.89 inchMagnetic Sensor 2: 10.6 x 5 cm / 4.17 x 1.97 inchPacking List: 1 x Rolling Door Contact SensorAdvantageRust-proof Material - The wired contact sensor is made of rust-proof and durable zinc alloy, with sensitive response of magnetism and can be used for a long time.
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YF-C01 4-point Water Flow Switch Magnetic Spring Switch Proximity Switch Reed Tube Flow Switch G1/2 External Teeth
Aliexpress UK
Description:Surface mount contact, screw mount white ABS housing. Wire is not included.Comes with installation screws.Great for use in family and factory wooden window, doors. etc.Switch Type: NC(normal close type), NC : When the magnet together, the circuit is conductive ,When the magnet separate,the circuit not conductive .When make order,please check carefully! .
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DC12-24V Door Switch IR Proximity Double Sensor Switch Door Open/Close ON LED Light Switch For Closet Cabinet Wardrobe Control
Aliexpress UK
Description:1.Self-Adhesive Mount, Screw Surface Mount contact, ABS Housing. Long wire lead that can side mounted. 2.Switch Type: 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 ).3.Work as an anti-theft alarm, perfect for wood door and window.4.N.C. means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separates, the circuit is not conductive ( light off ) Specification:Model: MC-38Contact Type: NC (Normally Closed)Actuation Distance: 10-15mmMax. Current: 0.5AMax. Power: 10WWorking Voltage: DC100VEach Size(Approx): 27 x 14 x 7.8mm / 1.06-inch x 0.55-inch x 0.31-inch (L*W*H)Mounting Hole Diameter: 4mm/0.16-inchCable Length(Each): 26cm / 10.
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4Pcs/set Universal Car Vehicle Interior Door Light Switch Courtesy Light Lamp Switch Button Black Door Panel Induction Switch
Aliexpress UK
Normally open: When the magnet and reed switch are together, they are in the off state (NO). Normally closed type: When the magnet and reed switch are together, they are in a conductive state (NC). Door magnetic switch (Set) 1.
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Sliding Door Contact Switch For Auto Car Truck Van Alarm Central Locking Systems Van Contact Switch Sliding Door Contact Switch
Aliexpress UK
1 X Surface Magnet. Colour: Brown. Material: High impact Polystyrene. Check availability with our specialists. 1 set Includes Part number ASSFC004BR. (Choose the number of sets you require above). Product details.
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Magnetic Diamond Gauze Mosquito Proof Door Curtain, White Magnetic Suction Door, Mosquito Net, Self-adhesive Screen Door
Aliexpress UK
These work on the basis of a reed switch. The reed switch is closed when the magnet is present (i.e. the door is closed). 1 X Flush Magnet. Check availability with our specialists. They are ideal for protecting access to interior doors, windows and even patio doors.
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2PCS GPS-30 Magnetic Control Reed Switch Normally Open/Closed 3*line NO/NC 19*29MM Door Window Magnet Induction Proximity Sensor
Aliexpress UK
202G WiFi&Wireless Push Switch x1. Wireless Function: 2.4Ghz wireless receiver, no need any hard-wired for Handheld remote, Push button, wave to open button, Access Keypad etc. Easy installation and modification for old system.
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Tuya Door sensor with battery recharge port wireless Magnetic window detector Magnet switch open alarm smart life AlexaGoogle
Aliexpress UK
1.NO means Normally Open: when the magnet separate, the circuit is conductive( light on );When the magnet together, the circuit is not conductive ( light off ).When make order,please check carefully! 2.NC means Normally Closed: when the magnet separate, the circuit is not conductive( light off );When the magnet together, the circuit is conductive ( light on ).When make order,please check carefully!Note: Door magnetic induction can only provide a switch signal, which can not directly load the power, nor directly connect the lamp!.
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Wired Garage Metal Roller Shutter window Gate Door Sensor detector Magnetic Contact Switch(NORMALLY CLOSED)
Aliexpress UK