Adafruit STEMMA Non-Latching Mini Relay - JST PH 2mm

Non-latching mini relay breakout with JST PH 2 mm connector for solderless microcontroller wiring, switching loads up to 250 V AC or DC. Controlled by any 3.3 V or 5 V digital output; suitable for lamps, fans, and solenoids.

Logical pinout · physical placement not verified

VCC
STEMMA/JST PH red power wire for the relay board input; source states it works with any 3V or 5V microcontroller and uses about 50mA when active.
Type · PowerVoltage · 3V or 5V logic supply, source-stated
GND
STEMMA/JST PH ground return for the relay board input.
Type · GroundVoltage · 0V
Signal
STEMMA/JST PH white signal wire. Pulling Signal high switches the relay so COM connects to NO and NC disconnects.
Type · GPIOVoltage · 3V or 5V logic compatible, source-stated
COM
Relay common contact. Source states COM is normally mechanically connected to NC and switches to NO when Signal is high.
Type · UnknownVoltage · Switching contact, source states up to 2A at 30VDC or about 40VAC or lower, lower current at higher voltages.
NC
Normally closed relay contact. Source states COM is connected to NC when the relay is not active and NC disconnects when Signal is high.
Type · ControlVoltage · Switching contact, source-stated ratings apply.
NO
Normally open relay contact. Source states NO is disconnected normally and connects to COM when Signal is high.
Type · UnknownVoltage · Switching contact, source-stated ratings apply.

Pin	Type	Function	Voltage
VCC	Power	STEMMA/JST PH red power wire for the relay board input; source states it works with any 3V or 5V microcontroller and uses about 50mA when active.	3V or 5V logic supply, source-stated
GND	Ground	STEMMA/JST PH ground return for the relay board input.	0V
Signal	GPIO	STEMMA/JST PH white signal wire. Pulling Signal high switches the relay so COM connects to NO and NC disconnects.	3V or 5V logic compatible, source-stated
COM	Unknown	Relay common contact. Source states COM is normally mechanically connected to NC and switches to NO when Signal is high.	Switching contact, source states up to 2A at 30VDC or about 40VAC or lower, lower current at higher voltages.
NC	Control	Normally closed relay contact. Source states COM is connected to NC when the relay is not active and NC disconnects when Signal is high.	Switching contact, source-stated ratings apply.
NO	Unknown	Normally open relay contact. Source states NO is disconnected normally and connects to COM when Signal is high.	Switching contact, source-stated ratings apply.

Logical pinout · physical placement not verified

Pin details

6 connections

VCC
STEMMA/JST PH red power wire for the relay board input; source states it works with any 3V or 5V microcontroller and uses about 50mA when active.
PowerVoltage · 3V or 5V logic supply, source-stated
GND
STEMMA/JST PH ground return for the relay board input.
GroundVoltage · 0V
Signal
STEMMA/JST PH white signal wire. Pulling Signal high switches the relay so COM connects to NO and NC disconnects.
GPIOVoltage · 3V or 5V logic compatible, source-stated
COM
Relay common contact. Source states COM is normally mechanically connected to NC and switches to NO when Signal is high.
UnknownVoltage · Switching contact, source states up to 2A at 30VDC or about 40VAC or lower, lower current at higher voltages.
NC
Normally closed relay contact. Source states COM is connected to NC when the relay is not active and NC disconnects when Signal is high.
ControlVoltage · Switching contact, source-stated ratings apply.
NO
Normally open relay contact. Source states NO is disconnected normally and connects to COM when Signal is high.
UnknownVoltage · Switching contact, source-stated ratings apply.

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