Circular Temperature/Humidity Recorder, with Probe, 6, 115 VAC

Features high and low alarms with relay|Records and displays both temperature and either relative humidity or dew point|Use recorder to simultaneously record temperature and either humidity or dew point. Recorder measures temperature from -20 to 120degF(-30 to 50degC) with an accuracy of ±1.8degF (1degC). Recorder reports humidity from 0 to 100% with an accuracy of ±2%. Convenient two-line LCD displays current values. Chart rotation speed is selectable from 1.5 hours to 7 days per revolution and is accurate to within ±1%. In the event of power failure, eight alkaline AA batteries (not included) supply power for approximately 24 hours of continuous recording. Internal alarm can be set for immediate or delayed operation by trigerring an audible alarm and/or a normally open, 48 VDC, 0.1 A relay. Recorder includes probe (6-ft cable length, measures 4-3/4"L x 9/16" dia), tw