1Dual Relay Output: This humidity controller has dual relay outputs and can be connected to both humidifier and dehumidifier simultaneously; Control humidity by setting target values and differences, automatically switching between humidification and dehumidification modes to maintain optimal humidity levels 2Convenient to Use: Equipped with large dual LED screens, displaying both measured values and set humidity levels simultaneously; Plug and play design with 3 operating buttons, easy to use; The 5.9ft power cord provides additional flexibility, and the hanging sign design ensures easy installation 3Reliable and Secure: This humidity regulator features visual and audible high low humidity alerts, sensor failure alarm, and compressors delay guard, providing comprehensive guard for your projects and equipment; 16AWG power cord and 10A relay reduce overload and minimize heat generation to the greatest extent possible 4Accurate Control: Equipped with excellent sensor, this humidity controller helps you adjust and maintain the desired optimal humidity level within a control range of 5%99%RH, with 3%RH; The humidity calibration function further enhances accurate humidity control 5Wide Application: With a powerful 1500W output load, this humidity regulator can control various humidifiers, dehumidifiers, fans, or ventilation systems; Suitable for greenhouses, planting tents, mushroom cultivation, hatching, reptile feeding boxes, germination rooms, home applications, etc 1 x Humidity Controller 1 x User Manual