This is an easy-to-use, safe and reliable humidity controller that can set a high or a low humidity , when the humidity is beyond the compass of limits, it will humidification or dehumidification automatically. High accuracy and wide humidity measuring range. Feature - - Material: plastic and metal - Size: 8.5 x 7.5 x 3.45cm - Mini digital humidity controller, can set a high or a low humidity , when the humidity is beyond the compass of limits, it will humidification or dehumidification automatically. - With humidity sensor, uses high precision capacitive chip, high accuracy and wide humidity measuring range. - With large and clear LED display for better readability. - All parameters can be set to default setting after short circuit. - Mini size, lightweight and portable. Specification - Operating Voltage: 220V. - Humidity control range: 1% ~ RH. - Humidity measurement accuracy: &plusmn; 1%RH. - Power consumption: <=3W. - Compatible with humidification and dehumidification control. - adjustable. (1%RH-50%RH). Package list: 1 humidity controller