Switch Type: NO/NC, circuit is connected when magnet is near the switch.
The reed switch is an electrical switch operated by an applied magnetic field.
Designed for use with alarm systems.
Great for use in family and factory window, door. etc.
Screw Mounted for easily install.
More than 0.5A, the spring will not be able to switch because the current is too large,Add a 12V relay to let the door sensor control the relay. The relay controls his switch just fine