The IF-100 allows spying on any Smart Switch products network and giving one relay output based on information received. The IF-100 can connect any where on the Smart Switch network. - spy on bilge system giving an input to the alarm system based on the following example - if any high water sensor is on - spy on tank system giving output for remote light - if any transfer or discharge pump is on Smart Switch RS-485 network bus Relay output Supply Voltage: 12 ~ 32 Volts DC (Auto sensing) | Quiescent Current: 15 Milliamps | Relay connections: Common Normally open Normally closed Reverse polarity protected | RS-485 cable length=1000m | Voltage & EMI Protected