Docooler 10A 110V Mini Digital Air Humidity Control Controller Measuring Range 1% ~ 99% with Sensor With humidity sensor, uses high precision capacitive chip, high accuracy and wide humidity measuring range. With large and clear LED display for better readability. PU delay protection function. All parameters can be set to default setting after short circuit. Mini digital humidity controller, can set a high or a low humidity limit, when the humidity is beyond the compass of limits, it will humidification or dehumidification automatically.