This integral control module allows for a 4-20mA connection on all Blackcomb 5.1/6.1 products. This device will allow for a 4-20mA signal transfer of the UV output to a remote device such as a data logger or computer. Simply plug the supplied cable into the "IEP" port on the UV sensor module (or daisy chain to any other module used in the system). Two screw the terminals are supplied to connect the wire that leads to the receiving end of the signal. As the distance required is unknown, no wire is supplied with this system, however 16-22 AWG is required.