Dwyer DW-WIFI-TH is a wireless Wi-Fi data logger that measures temperatures from -4 to 140°F (-20 to 60°C). It operates on a 3.7V lithium ion battery with a long probe length of either 11.8" (30 cm) or 59" (150 cm). With a memory capacity of 1,000,000 readings and a selectable sampling rate from 10 s to 12 hrs, it provides continuous recording and offers programmable high/low alarms. The interface is through Wi-Fi connection, and the transmission rate can be adjusted from 1 min to 24 hrs.