Now two units. A weatherproof sensor, display unit is positioned in the greenhouse. This 'talks' to a Main unit with a large LCD display by wireless transfer 418 Mhz up to 30metres away. This displays temperature and relative humidity being upgraded every few seconds.
Max & Min Temperature in C or F. Range -5 to + 50 oC and relative humidity 25% - 95%.
Highest & lowest readings stored & displayed & reset anytime. Batteries included (AA x 2 & AAA x 2).