WSG Wireless Temperature Sensors with External Probes are designed to work exclusively with the Sensaphone WSG30. This sensor circuitry includes a built-in radio transmitter. The sensors attach to a remote temperature probe so that temperature measurements can be made in a refrigerator, freezer or other harsh environments. It comes with two AA alkaline batteries which will power the sensor for up to two years.
The sensor's external temperature probe can be installed in a refrigerator, freezer or other harsh environment, while the sensor circuitry remains in a clean dry environment
Choose between two temperature ranges -121 to 115F