Precision Humidity Controller with Dual Sensor Probes

A professional-grade digital humidity controller engineered for accuracy and adaptability. It utilises an HM-40 humidity sensor and a discrete temperature sensor — each with its own cable — to deliver compensated RH readings across 1%–99% RH (±3% RH accuracy, 1% RH resolution). Dimensions are 85 x 75 x 34.5 mm; housing is impact-resistant ABS. Operates on AC 220V (≤200mA), with relay output rated AC 5A / 220V. Supports hysteresis tuning, upper/lower limit control, delay protection, and automatic data retention. Functional temperature range: 0°C–50°C; storage: −10°C–60°C. Ideal for controlled-environment applications requiring repeatable, stable humidity management.