HOBO U12-012 RH/Temp/Light/Ext Datalogger Check Availability

Stand-alone four channel data logger with internal sensors for monitoring relative light levels, temperature, relative humidity, and one external channel for proprietary temperature thermistors and current transducers and non-proprietary DC voltage signal 4 channel logger with 12-bit resolution that can record up to 43,000 measurements or events. The logger uses a direct USB interface for launching & data readout by a PC.

Manufacturer information here.

Required software here.

PG&E application note here.