Alarm ThermometerThis fridge and freezer alarm thermometer displays simultaneously the temperature of two appliances, over the range of -39.9 to +69.9°C with a 0.1°C resolution. The unit is housed in an ABS case (23 x 45 x 135mm). The thermometer features an audible, programmable alarm indicating when the temperature is outside set limits. The unit is powered by two MN2400 (AAA) batteries with a life expectancy of 5,000 hours. Supplied with two remote temperature probes, both with a one metre PVC lead.