TFA Thermo-Hygrometer BK Set of 2, Digital Thermo-Hygrometer Set, Control of indoor temperature and humidity, Comfort zone with smiley, Flexible mounting with adhesive pad and stand, For hanging or standing, Especially small and compact, Measuring range temperature: -10 to +50°C, Humidity measuring range: 10 to 99%., Requires 1 battery 3 V CR2032 each (included), Dimensions (L x W x H): 46 x 13 x 43 mm, Weight: 25 g each, Colour: Black, Set contents: 2 items