testo 635 2 Thermohygrometer

Amazon

Instrument memory for up to 10,000 readings PC software for analysis, filing and documentation of measurement data Measurement of air moisture, material equilibrium moisture, pressure dew point Protection class IP54

Test-meter.co.uk

Testo 635-2 Thermohygrometer. Measures air temp (-40˚C to 150˚C), humidity (0-100% RH), surface temp. Internal memory, USB transfer. Compatible with radio/K probes. IP54 rated. Includes software, cable, battery.