Relay Module 5Vdc – 1 Relay For Arduino & Microcontrollers
The module is equipped with four relays with a coil powered with a voltage of 24 V with optical isolation of input and mounting holes. The system allows you to control actuators with microcontroller ports or any commissioning set.
You can not control switching on/off your home lamp or laundry directly with Ardunio or microcontroller.
Relay Coil Voltage: 5Vdc. See the Link to its web page below for wiring digram and more technical specifications.
Relay Coil Voltage: 12Vdc