Gebildet2 sets Black Magnetic Switch Wiring NO/NC Recessed Door Sensor Hidden Window Contact Reed Switch for Access Control Replace Alarm System

Gebildet 2sets Black Magnetic Switch Wiring NO/NC Recessed Door Sensor Hidden Window Contact Reed Switch for Access Control Replace Alarm System

Shelly 1 Mini Gen3, WiFi Smart Switch Relay, 1 Channel, 8A, Home Automation, Dry Contacts, Garage Door Remote Control, Compact Size, Alexa & Google Home, No Hub Required (2 Pack)

GUUZI 6pcs DIY Electronic Reed Switch 3 pin 4W Magnetic Switch Normally Open Conversion 2.5MM×14MM NO NC