This is a Adafruit Non-Latching Mini Relay Feather Wing gives you power to control.Put simply, you can now turn on and off lamps, fans and other small appliances that run on up to 250VAC or DC power using any Feather board.
Using our Feather Stacking Headers or Feather Female Headers you can connect a FeatherWing on top of your Feather board and let the board take flight.
There are two flavors of these Feather Wings, this is the simple Non-Latching relay. This Wing has a single Set pin. Normally, the relay’s COM pin is connected mechanically to the NC pin and the NO pin is disconnected.
When the SET pin is pulled high, the relay switches and the internal switch changes so that the COM pin is mechanically connected to the NO pin and NC is then disconnected
When the relay is active, a red LED is lit, and about 50mA of current is used to keep the coil switched on. Note, if power is lost, the relay will go back open.