This is an easytouse, 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: 1%RH. Power consumption: