




💧 Command Your Climate Like a Pro — Precision Humidity Control, Elevated.
The WH8040 Digital Air Humidity Controller by Willhi delivers ultra-precise humidity measurement (±0.2% RH) and control across 0-99% RH. Featuring a robust 30A relay for high-power HVAC equipment, a 3-meter sensor cable for flexible placement, and a bright 3-digit LED display, it offers advanced programmability including calibration, delay, and alarm functions. Designed for professional environments demanding reliable, customizable humidity management.
| Manufacturer | Willhi |
| Part Number | WH8040110V 30A |
| Item Weight | 10.1 ounces |
| Package Dimensions | 4.5 x 3.5 x 2 inches |
| Is Discontinued By Manufacturer | No |
| Batteries Included? | No |
| Batteries Required? | No |
A**R
It works perfectly and I love it. The instructions are hard to understand unfortunately
It works perfectly and I love it. The instructions are hard to understand unfortunately. Please consult the internet for further help installing so you don't fry it if you don't understand.
A**R
I need help
I cant figure out how to make this thing work. I've done the wiring properly but my humidity readout is always 10-15% higher than 2nd control sensor. Can anybody help?
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