Features

This is a 2-Channel 5V Relay module. It allows the control of various appliances， and equipments with larger current directly by microcontroller (Raspberry Pi， Arduino， 8051， PIC， etc.)

Specification

• 2 optical isolators (see below for optical isolation)
• Separate power sources for relays (JD-Vcc) and optical isolators (Vcc)
• 2 relay status LEDs
• 4 mounting holes
• 2 SRD-05VDC-SL-C relays: AC250V 10A ; DC30V 10A
• Only use 2 I/O pins on the Arduino

Connection for Arduino

1. Normal Operation (no isolation)
   • Connect the jumper between "Vcc" and "JD-Vcc" (relays and optical isolators share the power source).
   • Connect "Vcc" to Arduino +5V and GND to Arduino Ground.
   • Connect Arduino Digital Output pins to "IN0"， "IN1" etc.
2. Optical Isolation
   • Remove the jumper between "Vcc" and "JD-Vcc".
   • Connect "Vcc" to Arduino +5V but do NOT connect GND to Arduino Ground.
   • Connect Arduino Digital Output pins to "IN0"， "IN1" etc.
   • Connect an external +5V power supply to "JD-Vcc" and GND.
   • This will supply power to the transistor drivers and relay coils.

Connection for Raspberry Pi

1. Normal Operation (no isolation)
   • Remove the jumper between "Vcc" and "JD-Vcc".
   • Connect "Vcc" to Raspberry Pi +3.3V and GND to Raspberry Pi Ground.
   • Connect "JD-Vcc" to Raspberry Pi +5V.
   • Connect Raspberry Pi GPIO pins to "IN0"， "IN1" etc.
2. Optical Isolation
   • Remove the jumper between "Vcc" and "JD-Vcc".
   • Connect "Vcc" to Raspberry Pi +3.3V but do NOT connect GND to Raspberry Pi Ground.
   • Connect Raspberry Pi GPIO to "IN0"， "IN1" etc.
   • Connect an external +5V power supply to "JD-Vcc" and GND.
   • This will supply power to the transistor drivers and relay coils.

Free Arduino Sample Program Code

Please email pier.electronics@gmail.com for the file

Package contents

1. 1x 2-channel 5V relay module