THERMOMETER Features: Main unit is waterproof construction conforming to IP-X6 rated (*1) -- protected against strong jets of water - limited ingress permitted and probes are IP-X7 rated (except SWPII-03).  They will not be affected in function at the touch of wet hands or with splash water Measured value can be held. (HOLD function) Power will automatically turn off after 60 minutes (AUTO-POWER OFF function) Low battery mark protects the power insufficient Specification: Model    SK-250WPII Series Waterproof Digital Thermometers Display range    -55°C to 305°C Measuring range    -50°C to 250°C (Measuring range is different depending on the probe connected) Probes connected    SK-SWPII series probes (Thermistor) Accuracy (body)    ±(0.1°C + 1 digit) at -9.9 to 199.9°C  ±(1°C + 1 digit) at other than above Waterproof properties    conforming to JIS C 0920 Protection class 6 (equivalent to IP X6) Operation ambient    0 to 50°C Display sampling    about 1 sec. Power requirements    3VDC ("AAA" (LR03) size battery x 2) Battery life    about 1000 hours continuous (by using alkaline batteries) Dimensions    71 (W) x 170 (H) x 36 (D) mm Weight (body)    approx. 0145 kg (inclusive batteries) Materials    ABS resin Standard accessories    SWPII-01M probe with test result, hand strap, vinyl cover,  "AAA" size alkaline battery x 2