Gebildet 10pcs 4W 3 Pin Reed Switch Reed Contact Normally Open N/O N/C SPDT, Glass Reed Relay Magnetic Induction Switch (2.5mm x 14mm) : Industrial & Scientific - Amazon.com
Baomain Air Cylinder Magnetic Sensor Switch CS1-U NO DC/AC 5-240V 100mA with Red LED Indicator: Amazon.com: Industrial & Scientific
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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
2PCS Pneumatic Air Cylinder Magnetic Reed Switch Sensor Proximity Sensor LED Indicator DC AC 5V- 240V: 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