Resources:
Mini Relay FeatherWings
Datasheet
Adafruit Non-Latching Mini Relay FeatherWing Compact Power Control for Feather Boards
The Adafruit Non-Latching Mini Relay FeatherWing adds compact power-switching capability to your Feather projects, allowing you to safely control lamps, fans, solenoids, and other small appliances that run on AC or DC power. Designed as a stackable Feather add-on, this Wing integrates seamlessly with any Feather board using stacking or female headers, giving you the ability to toggle external devices with ease. This relay FeatherWing features a non-latching relay that uses a single SET pin for activation. By default, the COM pin is mechanically connected to the NC pin. When the relay is triggered, COM switches to connect with the NO pin, while an onboard red LED lights up to indicate activation. It draws about 50mA to hold the relay in the active state. If power is lost, the relay automatically returns to its default open position. While compact, this relay is best suited for low-power applications (up to 60W). For heavier loads, Adafruit recommends their Power Relay FeatherWing, which can handle up to 1200W devices.
Key Features of Adafruit Non-Latching Mini Relay FeatherWing

Relay Type: Non-latching, controlled via a single SET pin.

Default State: COM mechanically connected to NC; switches to NO when active.

Load Ratings:

Up to 2A 30VDC or ~40VAC

0.6A 110VDC

0.5A 120VAC

0.3A 250VAC

Current Draw: ~50mA when active.

Status Indicator: Red LED lights up when relay is switched on.

Compact Control: Ideal for devices under 60W, such as small appliances, fans, and lights.

Feather Ecosystem Compatible: Works with all Feather boards; stackable with headers.

Fully Assembled: PCB with soldered terminal block included; headers provided (light soldering required).

Alternative Option: For power-saving or higher capacity needs, check out the Latching Relay FeatherWing or Power Relay FeatherWing.