Use our nodeLynk I2C Connector to build your own controller and make it compatible with the complete line of NCD nodeLynk devices! This is the same I2C connector we use on all of our IoT products. This 4-Pin Molex compatible connector makes it easy to plug in our devices! We buy in huge quantities so we can pass the savings on to you! Similar to Molex 0705530003 or WM4902-ND