This digital LCD temperature and humidity meter has a 1m long probe, which can test the temperature and humidity in some special places. Comes with a probe so you can place it wherever you want Widely used in aquariums, poultry, reptiles, incubators, greenhouses, etc. Measurement humidity range: 10% RH ~ 99% RH Humidity accuracy: +5/-5 %; Humidity display resolution: 1% RH Power supply: 2x LR44 1.5V button cell batteries (included),