![Amazon.com: 10Sets MC 38 Magnetic Reed Switch NC Mount Wired Door Window Sensor Recessed Alarm Security System Normally Closed, White : Electronics Amazon.com: 10Sets MC 38 Magnetic Reed Switch NC Mount Wired Door Window Sensor Recessed Alarm Security System Normally Closed, White : Electronics](https://m.media-amazon.com/images/I/41CPmzl0ZkL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOUR%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA80%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com: 10Sets MC 38 Magnetic Reed Switch NC Mount Wired Door Window Sensor Recessed Alarm Security System Normally Closed, White : Electronics
![Gebildet 10pcs Plastic Reed Switch Reed Contact Normally Open (N/O) Magnetic Induction Switch (2.5mm×14mm) with 20pcs Small Multi-Use Round Magnets : Amazon.ca: Industrial & Scientific Gebildet 10pcs Plastic Reed Switch Reed Contact Normally Open (N/O) Magnetic Induction Switch (2.5mm×14mm) with 20pcs Small Multi-Use Round Magnets : Amazon.ca: Industrial & Scientific](https://m.media-amazon.com/images/I/61RsCpAy+PL._AC_SY355_.jpg)
Gebildet 10pcs Plastic Reed Switch Reed Contact Normally Open (N/O) Magnetic Induction Switch (2.5mm×14mm) with 20pcs Small Multi-Use Round Magnets : Amazon.ca: Industrial & Scientific
![Heyiarbeit Magnetic Reed Switch Alarm Normally Closed/Opend Rolling Door Magnetic Door Switch for Door Window Security N.C. /N.O. Applications MC-51: Amazon.com: Tools & Home Improvement Heyiarbeit Magnetic Reed Switch Alarm Normally Closed/Opend Rolling Door Magnetic Door Switch for Door Window Security N.C. /N.O. Applications MC-51: Amazon.com: Tools & Home Improvement](https://m.media-amazon.com/images/I/51YXmDD71CL.jpg)
Heyiarbeit Magnetic Reed Switch Alarm Normally Closed/Opend Rolling Door Magnetic Door Switch for Door Window Security N.C. /N.O. Applications MC-51: Amazon.com: Tools & Home Improvement
![Amazon.com: 2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,DC 3V to 12v Lamp(White) : Industrial & Scientific Amazon.com: 2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,DC 3V to 12v Lamp(White) : Industrial & Scientific](https://m.media-amazon.com/images/I/61L2sb83TqL._AC_UF894,1000_QL80_.jpg)
Amazon.com: 2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,DC 3V to 12v Lamp(White) : Industrial & Scientific
![Reed Sensor 3.3V-5V Imported Reed 4 pcs/Set Magnetic Switch Module DIY Kit for SPC Exchange : Amazon.co.uk: Business, Industry & Science Reed Sensor 3.3V-5V Imported Reed 4 pcs/Set Magnetic Switch Module DIY Kit for SPC Exchange : Amazon.co.uk: Business, Industry & Science](https://m.media-amazon.com/images/I/614z1f9McWL._SX342_.jpg)
Reed Sensor 3.3V-5V Imported Reed 4 pcs/Set Magnetic Switch Module DIY Kit for SPC Exchange : Amazon.co.uk: Business, Industry & Science
![Amazon.com: Reed Switch Developments Corp, 2020-1710-10K, Magnetic Reed Sensor + Actuator Kit, Plastic, SPDT - Form C, 100W 120V 3A, Qty: 50 Kits : Industrial & Scientific Amazon.com: Reed Switch Developments Corp, 2020-1710-10K, Magnetic Reed Sensor + Actuator Kit, Plastic, SPDT - Form C, 100W 120V 3A, Qty: 50 Kits : Industrial & Scientific](https://m.media-amazon.com/images/I/31imlcEpNGL._AC_SY1000_.jpg)
Amazon.com: Reed Switch Developments Corp, 2020-1710-10K, Magnetic Reed Sensor + Actuator Kit, Plastic, SPDT - Form C, 100W 120V 3A, Qty: 50 Kits : Industrial & Scientific
![Amazon.com: Reed Switch Developments Corp, 2020-1710-10K, Magnetic Reed Sensor + Actuator Kit, Plastic, SPDT - Form C, 100W 120V 3A, Qty: 5 Kits : Industrial & Scientific Amazon.com: Reed Switch Developments Corp, 2020-1710-10K, Magnetic Reed Sensor + Actuator Kit, Plastic, SPDT - Form C, 100W 120V 3A, Qty: 5 Kits : Industrial & Scientific](https://m.media-amazon.com/images/I/51yygBwSGEL.jpg)
Amazon.com: Reed Switch Developments Corp, 2020-1710-10K, Magnetic Reed Sensor + Actuator Kit, Plastic, SPDT - Form C, 100W 120V 3A, Qty: 5 Kits : Industrial & Scientific
![Amazon.com: 3X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,to DC 5V 12V 24V Light : Industrial & Scientific Amazon.com: 3X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,to DC 5V 12V 24V Light : Industrial & Scientific](https://m.media-amazon.com/images/I/51uuRZCY5SL._AC_UF894,1000_QL80_.jpg)
Amazon.com: 3X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,to DC 5V 12V 24V Light : Industrial & Scientific
![Amazon.com: Reed Switch Developments Corp, 2451-1301-100, Magnetic Reed Sensor, Aluminum, SPDT - Form C, 5W, 175V, 0.25 Amp, Qty: 1 : Industrial & Scientific Amazon.com: Reed Switch Developments Corp, 2451-1301-100, Magnetic Reed Sensor, Aluminum, SPDT - Form C, 5W, 175V, 0.25 Amp, Qty: 1 : Industrial & Scientific](https://m.media-amazon.com/images/I/61IMy-Nf7TL.jpg)
Amazon.com: Reed Switch Developments Corp, 2451-1301-100, Magnetic Reed Sensor, Aluminum, SPDT - Form C, 5W, 175V, 0.25 Amp, Qty: 1 : Industrial & Scientific
![1PCS 3V 3.3V 2 Channel Relay Module with Lamp Low Level Trigger 2Channel 2Way Relay Module: Amazon.com: Industrial & Scientific 1PCS 3V 3.3V 2 Channel Relay Module with Lamp Low Level Trigger 2Channel 2Way Relay Module: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61TT8jdkcTL._AC_UF1000,1000_QL80_.jpg)
1PCS 3V 3.3V 2 Channel Relay Module with Lamp Low Level Trigger 2Channel 2Way Relay Module: Amazon.com: Industrial & Scientific
![Amazon.com: 5Sets Magnetic Reed Switch, Magnetic Door Switch/Magnetic Contact Switch/Normally Open Closed NC NO Door Alarm Window Security, for DC 5V 12V 24V Light (white-31) : Industrial & Scientific Amazon.com: 5Sets Magnetic Reed Switch, Magnetic Door Switch/Magnetic Contact Switch/Normally Open Closed NC NO Door Alarm Window Security, for DC 5V 12V 24V Light (white-31) : Industrial & Scientific](https://m.media-amazon.com/images/I/61Jx3nQUTfL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: 5Sets Magnetic Reed Switch, Magnetic Door Switch/Magnetic Contact Switch/Normally Open Closed NC NO Door Alarm Window Security, for DC 5V 12V 24V Light (white-31) : Industrial & Scientific
![Amazon.com: 2 PCS Magnetic Contact Switch, Icstation Magnetic Reed Switch Normally Open Door Reed Switch MC-38 Wired Security Window Door Contact Sensor Alarm : Electronics Amazon.com: 2 PCS Magnetic Contact Switch, Icstation Magnetic Reed Switch Normally Open Door Reed Switch MC-38 Wired Security Window Door Contact Sensor Alarm : Electronics](https://m.media-amazon.com/images/I/41nhmLYojrL._AC_SY580_.jpg)
Amazon.com: 2 PCS Magnetic Contact Switch, Icstation Magnetic Reed Switch Normally Open Door Reed Switch MC-38 Wired Security Window Door Contact Sensor Alarm : Electronics
![Amazon.com: NTE Electronics 54-627 Magnetic Alarm Reed Switch, SPDT Circuit, NO or NC Action, Magnet Actuator, Screw Terminals, 125V : Industrial & Scientific Amazon.com: NTE Electronics 54-627 Magnetic Alarm Reed Switch, SPDT Circuit, NO or NC Action, Magnet Actuator, Screw Terminals, 125V : Industrial & Scientific](https://m.media-amazon.com/images/I/51DdhIwLuNL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: NTE Electronics 54-627 Magnetic Alarm Reed Switch, SPDT Circuit, NO or NC Action, Magnet Actuator, Screw Terminals, 125V : Industrial & Scientific
![Amazon.com: Reed Switch Developments Corp, 2230-1301-100, Magnetic Reed Sensor, Plastic, SPDT - Form C, 5W, 175V, 0.25 Amp, Qty: 1 : Industrial & Scientific Amazon.com: Reed Switch Developments Corp, 2230-1301-100, Magnetic Reed Sensor, Plastic, SPDT - Form C, 5W, 175V, 0.25 Amp, Qty: 1 : Industrial & Scientific](https://images-na.ssl-images-amazon.com/images/I/61oweKoolVL._AC_UL600_SR600,600_.jpg)
Amazon.com: Reed Switch Developments Corp, 2230-1301-100, Magnetic Reed Sensor, Plastic, SPDT - Form C, 5W, 175V, 0.25 Amp, Qty: 1 : Industrial & Scientific
![Amazon.com: 2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,DC 3V to 12v Lamp(White) : Industrial & Scientific Amazon.com: 2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,DC 3V to 12v Lamp(White) : Industrial & Scientific](https://m.media-amazon.com/images/I/419Lsxx4rhL._AC_UF894,1000_QL80_.jpg)
Amazon.com: 2X Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch,DC 3V to 12v Lamp(White) : Industrial & Scientific
![DIYhz Reed Switch GPS-14A 14mm Plastic Anti-Interference Normally Open Magnetic Control Switch 10PCS : Buy Online at Best Price in KSA - Souq is now Amazon.sa: Electronics DIYhz Reed Switch GPS-14A 14mm Plastic Anti-Interference Normally Open Magnetic Control Switch 10PCS : Buy Online at Best Price in KSA - Souq is now Amazon.sa: Electronics](https://m.media-amazon.com/images/I/41lE+th6HIS._AC_SY1000_.jpg)
DIYhz Reed Switch GPS-14A 14mm Plastic Anti-Interference Normally Open Magnetic Control Switch 10PCS : Buy Online at Best Price in KSA - Souq is now Amazon.sa: Electronics
![Amazon.com: Reed Switch Developments Corp, 2501-1710-10K, Magnetic Reed Sensor + Actuator Kit, Aluminum, SPDT - Form C, 100W 120V 3A, Qty: 50 Kits : Industrial & Scientific Amazon.com: Reed Switch Developments Corp, 2501-1710-10K, Magnetic Reed Sensor + Actuator Kit, Aluminum, SPDT - Form C, 100W 120V 3A, Qty: 50 Kits : Industrial & Scientific](https://images-na.ssl-images-amazon.com/images/I/71-1pcTTpNL._AC_UL210_SR210,210_.jpg)