NIUNIU Home humidity temperature monitor: this portable thermometer hygrometer measures indoor humidity and temperature, helping you to know the indoor air conditions, ideal choice for your personal and professional life This indoor thermometer allow you to easily and fast know the environment temperature and humidity around you anywhere, nice to use in Reptile ,aquarium, poultry ,office, bedroom, living room, incubators, brooders and any other place that requires monitoring of temperature and humidity levels Rated voltage DC1.5v (2 AG13 button batteries) No battery provided Delivery Quantity: 2pcs, Package Contents: Only the above package contents, excluding other products. Size: 48*28.6*15.2mm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) Colour: Black (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)