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Best Pretend Closed circuit System

QMseller MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch 2 Sets

  • Work as an anti-theft alarm, ideal for metal door and window.
  • 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 ).
  • 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.
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GDQLCNXB 2 Sets MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch

  • 3.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 ).
  • 4.Work as an anti-theft alarm, ideal for metal door and window.
  • 5.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.
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UHPPOTE Wired Shutter Roller Magnetic Overhead Door Contact Output NC/NO with Bracket

  • This Contact Works with Any Access Control or Burglar Alarm System Available.
  • Great for use in family and factory window, door. etc..
  • 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).
  • 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).
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433MHZ Door Window Sensor detector working with 433mhz alarm system hub required

  • 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,pls check carefully!.
  • Max.Working Voltage: 100V,Contacts Status : NC (Normally Closed).
  • package Content : 6x Door Magnetic Switch.
  • 5.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..
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Fielect Rolling Door Contact Magnetic Reed Switch Alarm with 2 Wires for N.C. Applications MC-52

  • [Dimension] - Cable Length:300 mm；Sensing Distance: 25-35 mm.
  • Total Size: 49 x 19 x 9.8mm / 1.93" x 0.75" x 0.39" (L*W*H).
  • [Normally Closed] - 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 )..
  • [Material] - The magnetic reed switch alarm is with durable zinc alloy housing for better rust resistance.
  • [Widely Used] - Magnetic Reed Switch Alarm works with any access control or burglar alarm system available.
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Fielect 30Pcs MC-38 Surface Mount Wired N.C Door Sensor Alarm Magnetic Reed Switch White

  • [Dimension] - Cable Length:250 mm；Sensing Distance: 15-25 mm；Total Size: 27mm x 28mm x 7.5mm / 1.06" x 1.1" x 0.3"(L*W*H).
  • [Normally Closed] - 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 )..
  • [Widely Usedl] - This Door Contact Sensor works with any access control or burglar alarm system available.
  • [Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.
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Fielect 2pcs MC-38 Surface Mount Wired N.C Door Sensor Alarm Magnetic Reed Switch White

  • [Dimension] - Cable Length:250 mm；Sensing Distance: 15-25 mm；Total Size: 27mm x 28mm x 7.5mm / 1.06" x 1.1" x 0.3"(L*W*H).
  • [Normally Closed] - 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 )..
  • [Widely Usedl] - This Recessed Door Contact Sensor works with any access control or burglar alarm system available.
  • [Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.
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Fielect MC-38 Surface Mount Wired N.C. Door Sensor Alarm Magnetic Reed Switch White, 1Pcs

  • [Dimension] - Cable Length:250 mm；Sensing Distance: 15-25 mm；Total Size: 27mm x 28mm x 7.5mm / 1.06" x 1.1" x 0.3"(L*W*H).
  • [Normally Closed] - 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 )..
  • [Widely Usedl] - This Recessed Door Contact Sensor works with any access control or burglar alarm system available.
  • [Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.
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Fielect 5pcs MC-51 Surface Mount Wired N.C. Door Contact Sensor Alarm Magnetic Reed Switch White

  • Total Size: 50mm x 14mm x 14mm / 1.97" x 0.54" x 0.54"(L*W*H).
  • [Normally Closed] - 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 )..
  • [Widely Used] - This Door Contact Sensor works with any access control or burglar alarm system available.
  • [Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.
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Fielect N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-35 1pcs

  • [Dimension] - Cable Length:250 mm；Sensing Distance:15-25 mm；Total Size: 32mm x 11mm/1.26" x 0.43" (L*D).
  • [Normally Closed] - 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 )..
  • [Widely Usedl] - This Recessed Door Contact Sensor works with any access control or burglar alarm system available.
  • [Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.
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Fielect N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36 1pcs

  • [Dimension] - Cable Length:250 mm；Sensing Distance:20-30 mm；Total Size: 25mm x 23.5mm/0.98" x 0.93" (L*D).
  • [Normally Closed] - 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 )..
  • [Widely Usedl] - This Recessed Door Contact Sensor works with any access control or burglar alarm system available.
  • [Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.
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LeakSmart Automatic Leak Detection/Water Appliance Shut Off Kits for Washing Machines

  • Easy-to-read LED control panel with AC power and battery back-up. No internet connection required for protection, even if Wi-Fi is down..
  • Our closed-circuit leak protection system is designed exclusively for high-risk appliances. After the leak has been corrected, easily reset with the....
  • Reliable and continuous operation, our safeguard system performs an automatic 22-day maintenance cycling of the valves..
  • Immediate notification via an audible alarm and through the LeakSmart App.
  • Includes: (1) Easy-to-Read LED control panel indicating if the valve is closed or open, (1) Wired LeakSmart Water Sensor, (1) AC power adaptor with....
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Fielect 10Pcs Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White 28V 0.3A ABS Sensing Distance 15-25mm

  • [Dimension] - Cable Length:250 mm；Sensing Distance:15-25 mm；Total Size: 14mm x 6.5mm, 11.7 x 5.7mm (L*D).
  • [Normally Closed] - 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 )..
  • [Widely Usedl] - This Recessed Door Contact Sensor works with any access control or burglar alarm system available.
  • [Note] - the Magnetic Door Switch must be installed according to the sensing distance. It can only provide a switch signal to the transmitter. It cannot directly load the power, nor directly connect the lamp!.
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