This breakout board allows a low power logic level device running at 5V to operate a relay. The relay can switch up to 16A 250VAC or 16A 30VDC. This lets your low power microprocessor control big, power-hungry devices! To use the board you simply connect a constant 5V supply along with a signal connection. When the signal connection is taken high (over 2.1V) the relay and onboard LED indicator turn on. At this point, the relay which is normally open becomes a closed circuit. Caution: This breakout board can be used with mains electricity, however we don't recommend it and should only be undertaken by suitably professionally qualified people. Stick to battery-powered devices, robots and similar! Features * High current output drive (16A) * LED indicates when the relay is operating Contents * 1 x Relay Breakout Board Connections * GND - Ground / zero volts * Vcc - 5V power input * SIG - The signal input, 2.1V turns the relay on, 0V turns it off * LOAD - The outputs of the relay, when the relay is on these pins are connected together Resources * Relay breakout guide (PDF) * Relay example code (zip file) * Dimensions: * Length: 48mm * Width: 38mm * Height: 26.5mm https://elecena.pl/product/22721422/relay-control-breakout-board 2023-03-07 https://elecena.pl/product/22721422/relay-control-breakout-board 2023-12-27 https://elecena.pl/product/22721422/relay-control-breakout-board 2024-09-19 https://elecena.pl/product/22721422/relay-control-breakout-board 2024-11-29 https://elecena.pl/product/22721422/relay-control-breakout-board 2024-11-30 https://elecena.pl/product/22721422/relay-control-breakout-board 2025-11-28 https://elecena.pl/product/22721422/relay-control-breakout-board 2025-11-29