The EMR812 is an easy-to-use, state-of-the-art thermometer. The basic package comes with a main unit, which is the temperature station, and a remote unit, the thermo sensor. The main unit has extra-large read-outs for indoors temperature and for that collected and transmitted by the remote unit. The main unit can support up to three remote units. The main unit is capable of monitoring temperature changes of remote sites. By setting the upper and lower temperature limits the alarm will activate when those limits are exceeded. Also, the maximum and minimum temperature of different sites can also be retrieved quickly. No wire installation is required between the main and remote units. As the EMR812 operates at 433MHz, it can be used in the U. and most places in Continental Europe...