Phoenix Contact 2811860 The device features a freely programmable temperature transducer with an analog output and one limit value relay in its standard configuration. It can be configured as a resistance thermometer using either 2-, 3-, or 4-conductor technology or it can utilize thermocouples. The device also offers electrical isolation, a wide-range power supply, push-in connections, and certifications for SIL (Safety Instrumented System) and PL (Process Logic).