Amazon.com: Megatronix MGT Magnetic Reed Switch Alarm Security Sensor Normally Open (N/O) / Normally Closed (N/C) : 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 (Black-B31) : Industrial & Scientific
Amazon.com: SpzcdZa 5Sets Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch for GPS,Alarm or Other Device,DC 5V 12V 24V Light : Electronics
Amazon.com: Reed Switch Developments Corp, 2230-1051-10K, Magnetic Reed Sensor + Actuator Kit, Plastic, SPST - Form A, 15W 200V 1A, Qty: 1 Kit : Industrial & Scientific
5504-24-1, High Voltage Reed Relay, 1 Form B, Load Switching: Replacement Household Furnace Electronic Relays: Amazon.com: Tools & Home Improvement
Amazon.com: DIYhz Reed Switch GPS-14A 14mm Plastic Anti-Interference Normally Open Magnetic Control Switch 10PCS : Electronics
Amazon.com: PARTS EXPRESS Reed Switch and Magnet Assembly : Industrial & Scientific
Amazon.com: 2Sets Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch for GPS,Alarm or Other Device,DC 5V 12V 24V Light : Electronics
Amazon.com: TOWODE Lot of 6 Wired Magnetic Door Window Contact Reed Switch Personal Gap Alarm - Cabinet Strip Light Switch NC DIY Kit : Industrial & Scientific
Amazon.com: Reed Relays Reed Relay, 1 Form A SPST-NO 5V Mold DIP (10 pieces) : Industrial & Scientific
Amazon.com: tatoko Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security 6Sets : Electronics
Amazon.com: Magnetic Switch A Pair Normally Closed Door Window Reed Switch Metal Housing Micro Alarm Magnetic Contact Security for Metal Door Window : Industrial & Scientific
Amazon.com: SpzcdZa 2Sets Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security/Magnetic Door Switch/Magnetic Contact Switch/Reed Switch for GPS,Alarm or Other Device,DC 5V 12V 24V Light : Electronics