| Quartz controlled drive gives consistant drum rotation speed even as batteries weaken|
Record temperature and humidity on 1, 7 or 32 day rotation
Lightweight and corrosion resistant construction for indoor or sheltered outdoor use
Maintain temperature and humidity records for buildings or controlled environment chambers. Use one-day rotation for detailed views of troubled areas, longer rotation times for routine records.
A flashing LED indicates drum is rotating. Two size C batteries provide up to six months of continuous operation. Features a battery test button.
Includes red and blue pens, batteries and one seven-day rotation chart.