New Amazon Smart Plug, Voice And App Control Letting You Use While Not At Home
Turn Devices On/Off Via Alexa App On Smartphone Or With Voice Commands Through An Echo Device.
10pk Magnetic Alarm Magnetic Reed Switches Wired Office/Home Security
Switch is closed wile magnet is near.
6 Pcs Brown Wired Magnetic Door Window Contact Reed Switch, Surface-Mounted N…
NC type: NC stands for normally closed. If the magnet and the switch are combined, the circuit will conduct electricity; if the magnet and the switch are separated, the circuit will not conduct electricity.