Digitec 5831-.01-R Five Channel Scanning Thermistor Thermometer; Recorder Output; 10mV Per °F or °C 08502-16

Scan up to five probes (400, 500, and 700 series) at different locations simultaneously—in any order, automatically. Manually select the channel you wish to display from the front-panel keypad. LEDs located below the probe-select keypad light up to indicate which channel is being displayed. Hold function allows you to interrupt scanning to view one channel. Thermometers scan at 3 seconds/channel and update 4 readings/second. When not scanning, press hold key to freeze a reading—ideal when measuring rapidly changing systems.
The differential mode performs ΔT functions on any two input probes, in any order—ideal for HVAC applications. The average mode takes the average of any combination of probes or a time average of any one of the inputs. You can display the minimum or maximum