Appropriate for use as temperature calibration standard, thermistor-based digital Model 4400T has range of -20 to +130°F with accuracy to ±0.03°C from -5 to +70°C and ±0.05°C over rest of range. LCD has low-battery indicator, rubber rocker switch for °C/°F, and rate-of-change arrows, which flash relative to speed of change in temperature. Powered by 9 Vdc battery, thermometer includes 7 in. stainless steel probe and 6 ft cable.