We have a wide range of Ethernet controlled relay modules here. Featuring from 2 to 20 relays, these are perfect for your IOT application.
When you need a relay module to connect directly to your PC, our USB controlled modules are the choice.
When you cannot get an Ethernet cable to your controller, a WIFI based alternative is the ideal fit.
Alternative relay boards controlled by Bluetooth, Serial and even an intelligent relay boards that can act autonomously from sensor inputs.