Pro Leaf Digital Humidity Controller - HUM-B1 | 5-90% RH Control | 10AThe Pro Leaf HUM B1 Digital Humidity Controller offers precise control of humidity levels for indoor growing, hydroponics, or climate managed environments. Designed to automate humidifiers or dehumidifiers, this plug and play unit allows you to set your ideal day and night humidity ranges with independent adjustable dials. With a wide control range of 5% to 90% RH, 3% accuracy, and a 5% dead band (hysteresis) for stable performance, the HUM B1 ensures