12-ch relay module with buttons and RS-232 control

Our 12-ch relay module for controlling up to 12 devices. Each relay can switch up to 240V/16A. You can set each relay to bistable or time mode. For control all functions and settings you can use RS-232 and for simple switching on/off/time you can use 12 inputs socket (to GND or to 12V). It’s great for home Automation & IoT Power Switching Engine.