The WatchDog B-Series Button Loggers are water resistant, powerful, and exceptionally affordable.The 3619WD 2K Temperature Logger will log 2,000 measurements, while the 3620WD 8K Temperature Logger has four times the capacity, or 8,000 measurements. The 3621WD Temp/RH Logger will record 8,000 measurements - 4,000 each for temperature and humidity.

They log temperatures ranging from 14° to 185°F (-10° to 85°C) with accuracy of ±2°F (±1.1°C) and features a battery life of up to 10 years, depending on measurement interval. Water resistant case protects internal sensor and circuitry. Record soil temperature or track shipments of perishable commodities. Note: these loggers are Water Resistant, not Water Proof. While they can be exposed to rainfall or water spray, they cannot be in constant contact with water for extended periods. If they are buried to measure soil temperature, they must be placed in a waterproof container or packet. Use with SpecWare Software and snap-in docking station to download data for analysis and reporting. Actual size is 2" x 2".