Elitech RC4 Temperature Data Logger Recorder with External Temperature SensorMore Info
From the product description, check product page for current description, price and availability:
Elitech RC-4 temperature data logger features a multifunction LCD alarm indicator, replaceable battery with a buzzer
alarm. A reason why it satisfies the dynamic and growing demand for cost effective temperature data logger in cold chain
supply. With Elitech PDF temperature data logger, users can export data in PDF or Excel via Elitech data management software.
For convenience, Elitech designs these temperature data loggers with both internal and optional exterior temperature sensor.
They are highly sensitive and can detect slight changes in temperature. This makes Elitech PDF temperature data loggers a
better alternative for: pharmaceuticals, food, medical cabinets, laboratories, cold storage or breeding industry.
Possible uses include monitoring kegerator temperatures, beer fridge temperatures and fermentation chamber/area temperatures.
I use a similar (but different) device in my kegerator! See: Upgrade Your Kegerator – 6 Improvements for some more info and photos.