U12 Temp/rh/2 External Logger

The HOBO U12 Temp/RH/2 External Logger contains internal sensors for monitoring two common indoor parameters. Two external channels accept a wide range of external sensors, including temperature, AC current, AC voltage, CO2, 4-20mA, and DC voltage cables
External Sensor Measurements

External sensors are available to measure:
* 4-20mA
* AC Current
* AC Voltage
* Carbon Dioxide
* DC Voltage
* Temperature

Salient Features of U12 Temp/RH/2 External Logger :-
* Complete download in 30 seconds via direct USB interface
* Programmable sampling rate (1 second to 18 hours)
* Numerous event types stored to data file asynchronously
* Battery level indication at launch
* Battery level can be recorded as a separate channel
* 1-year battery life (typical) a user-replaceable CR-2032 lithium battery
* Non-volatile memory retains data even if battery fails
* NIST-traceable temperature accuracy certification available
* Patented technology (U.S. Patent 6,826,664)