Using the custom Crestron module that ihiji has developed, dealers can monitor any 2-way RS-232 device, IP, Zigbee or Cresnet device within the ihiji invision application. The Crestron processor acts as a proxy between the invision appliance, that lives on the network, and the legacy device that lives behind the processor. This custom SIMPL module does not rely on SNMP communications, which are very limited on what information they can