5V 10A 1-Channel Power Relay Module 250V/10A

This 1-channel 5V SPDT AC power relay board can be controlled directly via a microcontroller and switch up to 10 amperes at 250 VAC. Inputs are isolated to protect any delicate control circuitry.

Specifications

• Polarity: Active Low – you must ground the control input to switch this device ON
• Relay Max Switching Voltage: 250 Volts AC
• Relay Max Switching: Current: 10 Amps AC
• Relay Control Voltage: 5.0V directly via microcontroller (Arduino, AVR, PIC, ARM, BoardX, Raspberry Pi, MSP430, etc)
• Relay Control Current: 20-30 mA
• Indicators:

• Red LED illuminates when +5V VCC control power is applied to the board.
• Green LED illuminates when control pin is pulled low (relay is activated).
• Size: 42mm x 17mm x 17mm (1.65 x 0.67 x 0.67 inches) L x W x H

Using the 1-Channel Relay Module

LEDs

The relay module contains two LEDs.

The power red LED will light up when the module is powered on. The green status LED will light up when the relay is activated.

Output Terminal Block

The high voltage terminals (NC, COM, and NO) of the relay are broken out to a screw terminal. The device you want to control can be connected across them.

Control Pins

On the other side of the module, there is an input pin IN for controlling the relay. This pin is 5V logic compatible, so if you have a microcontroller like an Arduino, you can drive a relay with any digital output pin.

The input pin is active low, which means that a logic LOW activates the relay and a logic HIGH deactivates it.

Module Power

The module operates on 5 volts and draws approximately 70 mA when the relay is activated. It includes a diode that is connected in parallel with the relay coil to safely shunt current when the relay coil is de-energized.

Operation

The default state of the relay when the power is off for COMM (power) to be connected to NC (Normally Closed). This is the equivalent of setting the relay board IN pin to HIGH (has +5v sent to it).

When you have power connected to the relay’s NO (Normally Open) connector and you set the corresponding IN pin to LOW (0V, or Ground), power will flow in from the COMM connector and out of the NO connector powering your device.

Therefor, if you want to keep your device off most of the time and turn it on occasionally, connect the other end of the wire to NO. Then to turn it on, set the IN pin to HIGH (+5V) to turn it on. Otherwise, connect the device to NC. The device will stay on when the IN pin is LOW (0V, or Ground), and will turn off when the IN pin is set HIGH (+5V).

Where to Buy the 5V 10A 1-Channel Power Relay Module

5V 10A 1-Channel Power Relay Module at Envistia Mall

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