Extech RHT50 Weather Data Logger

Records Relative Humidity (0 to 100%RH), Temperature (-40 to 158°F /-40 to 70°C) and Atmospheric Pressure (13.7 to 15psi / 950 to 1050hPa / 95 to 105kPa / 0.9 to 1.0bar). Datalogs up to 10,000 readings with user programmable sample rate from 1 minute to 18 hours. USB interface for easy set-up and data download. Selectable Atmospheric Pressure Units: psi, hPa, kPa, and bar. User-programmable High/Low alarm thresholds. Manual and Programmable start modes. Status Indication via Red/Yellow LED and Green LED. Complete with 3.6V Lithium battery, mounting bracket, and Windows compatible analysis software

Monitors Humidity and Temperature levels in warehouse, storage rooms, freezers, shipping vans, and water damage restoration. Use 2 dataloggers to measure for positive/negative pressure between two rooms or indoors/outdoors.