Relay 5V 30A 1 Channel Module with Optocoupler at Rs 175/piece | Relay Modules in Kolkata | ID: 2852754783912
HALJIA 5V 30A 2 Channel High and Low Level Trigger Relay Module Intelligent Home PLC Automation Control Compatible with Arduino : Amazon.co.uk: DIY & Tools
How to to wire Arduino with 5V 2 Channel 30A Relay Module - General Electronics - Arduino Forum