Adafruit
Adafruit Mini Relay FeatherWing - Non-Latching
$15.95
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The Adafruit Non-Latching Mini Relay FeatherWing lets you control mains-powered devices and small appliances using any Feather microcontroller. Switch lamps,...
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The Adafruit Non-Latching Mini Relay FeatherWing lets you control mains-powered devices and small appliances using any Feather microcontroller. Switch lamps, fans, solenoids, and other loads rated up to 250 VAC or DC — all from a compact FeatherWing form factor.
This is the non-latching version, which uses a single control pin. Pull the SET pin high to activate the relay (a red LED indicates when it's on). The relay draws approximately 50 mA while energised and returns to its default open state if power is lost. Attach it to your Feather using Feather Stacking Headers.
Key Features
- Non-Latching Relay – Single-pin control; COM connects to NO when SET is high, returns to NC when released
- Flexible Switching – Up to 2 A at 30 VDC / 40 VAC, 0.5 A at 120 VAC, or 0.6 A at 250 VAC (60 W max recommended)
- Status LED – Red LED lights when the relay is active
- Simple Control – Only one GPIO pin required to operate
- Screw Terminal Block – 3-pin terminal (COM, NC, NO) included for easy load wiring
- Feather Compatible – Works with any Feather board via standard header connection
- Pre-Assembled PCB – Light soldering required to attach the included header
Warning: If using with voltages above 24 V, exercise caution. High-voltage wiring requires experience and should only be performed by qualified individuals following appropriate safety guidelines.
Ideal For
- Home automation and IoT switching
- Controlling lamps, fans, solenoids, and small appliances (up to 60 W)
- Projects where simple on/off control is sufficient
- Prototyping relay-controlled circuits with Feather boards
Package Contents
- 1× Non-Latching Mini Relay FeatherWing (assembled and tested)
- 1× 3-pin terminal block
- 1× Header strip (requires soldering)
Note: This relay draws ~50 mA while active. For battery-powered projects, consider the Latching Mini Relay FeatherWing which only needs a brief pulse to switch. For higher-power loads up to 1200 W (10 A), see the Power Relay FeatherWing. Terminal block colour may vary (blue or black).
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- FeatherWing
- A FeatherWing is an add-on board made to plug into the Feather microcontroller board layout. Knowing a product is a FeatherWing helps you check whether it will physically and electrically fit your Feather-style mainboard.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- Terminal block
- A terminal block is a connector that joins wires together in a neat, removable, or serviceable way, usually clamping each wire under a screw or spring instead of soldering. It makes it easier to connect, change, or service wiring without permanent joints.
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