Description

5V to 10A/250V relay module – with optoisolation for Arduino – 4 channels

Universal 5V relay module with optoelectronic isolation for 10A/250VAC.

• The circuit allows you to control the actuators using the ports of the microcontroller or any runner kit.
• The module is supplied with 5V to the corresponding VCC and GND pins.
• Thanks to the use of opto-isolation, the current consumption of the channel is minimal, so you can easily control the microcontroller.
• The operating status LED of each relay channel indicates that the relay is switched on.
• The module is switched on by applying a low LOW state, and therefore ground to the signal inputs In1, In2…
• After removing the jumper, the module enters the test mode, this is a mode in which after the signal is given, the relay does not turn on, only the status LED informs about its operation (this is a useful feature during testing in order not to switch on and off the frequently connected circuit under the relay).

Product features

• Module equipped with four SRD-05 relays with coil powered by 5 V with optical input isolation.
• The module allows you to control four actuators drawing up to 10 amps each using the ports of a microcontroller or any Arduino development kit
• Opto-isolation separates the control signal from the relay power supply part, thus ensuring the safety of the control system operation.
• Application for contact boards, runtime modules, arduino, etc.
• For proper operation, all you need to do is connect the relay power supply and the digital control signal.
• Application examples:
  • Lighting controller
  • Controller of executive systems
  • Switch for electrical equipment including motors
• The module has:
  • power LED indication
  • lED indication of relay status
  • Activation of the relay with the LOW state

Technical data

• Two channels of operation
• VCC supply voltage: 5 V
• IN input voltage: from 3.0 V to 5.5 V
• Relay SRD-05VDC-SL-C (documentation) – 4 pieces
• Coil voltage: 5 V
• Maximum contact voltage: 250 VAC
• Maximum current: 10 A
• Plate dimensions 48x27x20 mm

Connecting

• The module has six input leads VCC, GND, IN- and IN+.
• In order for the circuit to work properly, it is necessary to connect:
  • 5 V power supply to VCC pin
  • ground to GND
  • input signals to IN1 to IN4.
• Thanks to the use of optical isolation, the input voltage can take a value from 3 V to 5.5 V.
• The jumper allows you to select the state with which the relay will be switched on:
  • Jumper between VCC and JD – relay on (default setting)
  • No jumper between VCC and JD – channel operation test (relay is not switched on, only signal diode)

Video presentation

Guide – relays with Arduino