The Alecto WS-1330 hygrometer consists of an indoor unit and 3 outdoor sensors. The temperature and humidity are measured at 4 different locations. The values of each sensor are shown on the digital screen with a size of 4.5 x 6.3 cm. This way you can clearly read the measured values from each location. The outdoor sensors have a range of up to 30 meters. The weather is shown via emoticons. For example, you see a smiling face when the combination of temperature and humidity is comfortable and a sad face when the combination is too moist, for example. Set an alarm when the values are high or low and you are always aware of weather differences.
The hygrometer works on 6 AA batteries and 2 AAA batteries. These are not supplied as standard.