Global Cache's iTach WiFi to Closed Contact adapter (photo coming soon - WF2IR Shown) # Ultra compact device (fits in the palm of your hand) for convenient and unobtrusive connectivity # WiFi can be used from anywhere and does not require line-of-sight access or wiring # Ethernet wired iTach offers Power over Ethernet (PoE) option -- no power supply required # Infrared (IR), Serial (RS232), and Relay (contact closure) models available for installation flexibility