This shield have 2 channels mechanical relays and 2 channels MOS switch, providing an easy way for applications of voltage controlling from low to high.

The 3Pins breakouts make it easy to build a project or prototyping quickly, by using many existing sensor modules. And there are some wireless interface breakouts on board; you can use it to connect with many wireless modules.

Features

2 mechanical relays with photo-coupled circuit

2 MOS switch with internal power supply

XBee, nRF24l02, RF315/433M module wireless interface

Arduino AD pins 3 PINs interface breakout for Sensor module

Equipped with screw holes for easy installation

Native Arduino compatibility