This affordable logger is well suited to measuring both air and soil temperatures. For outdoor or greenhouse applicatons, the radiation shield (Item #3663) is required. The logger's circuit board is conformal coated for longer life in humid environments.

External temperature sensor has a 6-foot cable. User replaceable battery (CR 2032-3V) has 8-month battery life. A Radiation Shield is required when the logger is used in outdoor conditions. Blinking LED confirms the logger is recording.

Click to view the WatchDog 125 Data Logger user manual.