Elitech BT-3 Indoor/outdoor temperature, indoor humidity display. ℃/°F temperature switch display, comfort display. Indoor and outdoor maximum and minimum temperature memory function. Memorized MAX/MIN indoor temperature and humidity value automatically. With back stand and magnetic stick at back side, convenient to place.
4)Power supply :1.5V DC 7#battery
1xBT-3 thermometer with external sensor
To download its manual, please click here.