Comes with 4 thermo-hygrometers to meet different needs Integrated installation design, powered by 2 x AG13/LR44 batteries (not included) Large LCD display (3.57 x 1.68 cm) with big digits for easy reading from a distance Temperature range: -50C~70C, Humidity range: 10%~99%, Temperature accuracy: 1C (under normal temperature), Humidity accuracy: 5% With 1.5m long probe cable, ideal for office, bedroom, living room, aquarium, incubator, brooders, reptile tank, greenhouse, etc. Features: Large LCD display for clearly display temperature and humidity at the same time Integrated design for easy installation, powered by 2 x AG13 / LR44 batteries (not included) Professional thermo-hygrometer to accurately monitor the temperature and humidity of the environment Equipped with a 1.5m long probe cable, it allows you to test the temperature and humidity of some special places, such as aquarium, poultry, reptile tank, incubator, greenhouse, office, bedroom, living room, brooders, etc. Specifications: Color: Black Material: ABS Piece Weight: 25g / 0.1lb Dimensions: 4.8 x 1.5 x 1.5 cm 2.86 x 1.52cm / 1.9 x 1.1 x 0.6inch LCD Dimension: 3.57 x 1.68cm / 1.41 x 0.67inch Power By: 2 x AG13 / LR44 Batteries (Not Included) Temperature Range: -50C ~ 70C / -58F ~ 158F Temperature Accuracy: 1C Humidity Range: 10% ~ 99% Humidity Accuracy: 5% Humidity Resolution: 1% Sampling Period: 10s Rated Voltage: DC1.5v Probe Cable Length: 1.5m Package Including: 4 xThermometer Hygrometer LRFR is committed to providing each customer with the highest standard of customer service.