GPIB Interface (Internal) for TestEquity 140, 123, 1000, and 3000 Series Environmental Chambers. Converts the temperature controller's serial interface to GPIB. More info >>

Converts simple ASCII commands into Modbus RTU messages. Relieves you from having to generate and check Modbus packets, simplifying communications to the Watlow F4T, F4, and EZ-Zone controllers.

RS-232 interface is no longer available for customer use when this option is installed.