XH-W3005 DC 12V 10A Digital Humidity Controller
Professional Humidity Control for 12V Systems
The XHW3005 DC 12V is a highperformance digital humidity controller designed for 12V DC systems with 0~99% RH measurement and 10A relay output. This hygrostat provides precise automatic control for humidifiers, dehumidifiers, and ventilation systems with its built-in sensor and large LCD display.
Built-in sensor with ±3% RH accuracy
Compatible with HUM and DEH operating modes
Rated for 12V DC 10A max - do not exceed
Technical Specifications
| Parameter | Value |
|---|
| Model | XH-W3005 (W3005) |
| Power Supply | 12V DC |
| Relay Output | 10A (resistive load) |
| Humidity Range | 0 ~ 99% RH |
| Measurement Accuracy | ±3% RH |
| Temperature Range | -40°C ~ 120°C |
| Sensor Type | Built-in digital sensor |
| Display | Large LCD with backlight |
| Power Consumption | < 3W |
| Working Temperature | -10°C ~ 60°C |
| Dimensions | 80 x 55 x 35 mm |
= Key Features =
High Precision - ±3% RH accuracy for reliable control
Dual Mode - Switchable HUM/DEH operation
Large LCD Clear realtime humidity and temperature readings
10A Relay Direct control of highpower 12V devices
Wide Range - 0~99% RH adjustable setpoint
Memory Function - Retains settings after power loss
Temperature Display - Shows current temperature alongside humidity
Compact Design Spacesaving form factor
Low Power Consumption Ideal for batterypowered applications
= Applications =
- Mushroom cultivation and growing rooms
- Greenhouse and agricultural environments
- HVAC systems and climate control
- Seed germination and plant propagation
- Home wine cellars and cigar humidors
- Industrial storage and warehouses
- Automotive and marine applications
- Solar-powered systems
- RV and caravan climate control
- Laboratory and clean room environments
- Food processing and storage facilities
How to Set Up
- Connect 12V DC to power input terminals (+/-)
- Wire load to relay output (COM/NO/NC)
- Power on and select HUM or DEH mode
- Set desired humidity level using UP/DOWN buttons
- Adjust hysteresis if needed (default 3% RH)
Default hysteresis is 3% RH to prevent rapid cycling
For critical applications, set to 1% for tighter control
Verify correct polarity when connecting 12V DC
Modes Explained
HUM Mode: Relay activates when humidity falls below setpoint (humidifier runs)
DEH Mode: Relay activates when humidity rises above setpoint (dehumidifier runs)
Important Settings
| Parameter | Range | Default |
|---|
| Setpoint (H/S) | 0-99% RH | 50% |
| Mode (COD) | HUM/DEH | HUM |
| Hysteresis (DIF) | 0.1-9.9% | 3.0% |
| Calibration (CAL) | ±9.9% | 0.0% |
= Calibration Instructions =
Press and hold SET for 5 seconds to enter menu, navigate to CAL parameter, adjust offset to match reference hygrometer, press SET to save.
Positive offset (+) increases displayed reading
Negative offset (-) decreases displayed reading
Calibrate annually or when accuracy issues arise
What's Included
- XH-W3005 DC 12V Controller
- Built-in Humidity Sensor
- Mounting Brackets with Screws
- User Manual
Why Choose XH-W3005 DC 12V?
±3% RH accuracy for reliable humidity control
Dedicated 12V DC input for automotive and mobile systems
Dual humidification and dehumidification modes
Simple operation with intuitive interface
Versatile applications across industries
Low power consumption for battery systems
√ Ready to use out of the box with pre-calibrated sensor
√ Large LCD for easy reading in any condition
√ Memory retains settings during power interruptions
√ 10A relay capacity for direct load control
√ Compact design fits in standard electrical panels
√ Ideal for solarpowered and offgrid applications
Safety Precautions
Installation by qualified personnel only
Disconnect power before wiring connections
Do not exceed 10A current rating
Keep away from water splashes and direct sunlight
Do not use in explosive or flammable environments
Ensure proper ventilation around controller
Do not attempt to open or modify the unit
Verify correct polarity when connecting 12V DC
Use appropriate fuse protection for your circuit
For loads exceeding 10A, use an external contactor or relay
Install at least 2 meters above floor level for best sensor performance
Avoid installing in areas with chemical vapors or condensation
Troubleshooting Common Issues
"ERR" or "-" display - Sensor connection issue or sensor failure
Relay not switching - Check power supply and wiring connections
Inaccurate reading - Perform CAL adjustment or relocate sensor
Blank display - Check 12V DC power input and polarity
Relay clicking rapidly - Increase hysteresis (DIF) setting
Cannot change settings - Press and hold SET for 5 seconds
For "ERR" error, try resetting by power cycling the unit
If problems persist, contact our support team
Compatibility Guide
| Device Type | Compatibility |
|---|
| 12V DC Humidifiers | √ Yes (within 10A) |
| 12V DC Dehumidifiers | √ Yes (within 10A) |
| 12V Ventilation Fans | √ Yes (within 10A) |
| 12V Misting Systems | √ Yes (within 10A) |
| 12V Heating Elements | √ Yes (within 10A) |
| Automotive Systems | √ Yes (12V systems) |
| Marine Systems | √ Yes (12V boats) |
| Solar-Powered Systems | √ Yes (12V battery banks) |
= Quick Reference: Default Factory Settings =
| Setting | Value |
|---|
| Humidity Setpoint | 50% RH |
| Control Mode | HUM (Humidification) |
| Hysteresis | 3.0% RH |
| Calibration Offset | 0.0% RH |
| Delay Time | 0 minutes |
? Adjust these settings to suit your specific application requirements
Maintenance Tips
√ Clean unit surface with dry cloth only - do not use liquids
√ Check wiring connections periodically for tightness
√ Verify humidity reading against reference hygrometer every 6 months
√ Keep sensor area free from dust and debris
√ Test relay function periodically
√ Check battery voltage if used in mobile applications
Quick Comparison: 12V vs 24V vs 220V Versions
| Feature | 12V DC Version | 24V DC Version | 220V AC Version |
|---|
| Power Input | 12V DC | 24V DC | 90-240V AC |
| Best For | Automotive, RV, boats | Marine, solar, industrial | Home, industrial AC power |
| Safety | Low voltage, safe handling | Low voltage, safe handling | Standard mains voltage |
| Relay Rating | 10A @ 12V DC | 10A @ 24V DC | 10A @ 220V AC |
| Power Source | Battery, solar, vehicle | Battery, solar | Mains power |
Choose the XHW3005 DC 12V for reliable humidity control in mobile and lowvoltage systems! Perfect for automotive, marine, RV, and solarpowered applications, this controller delivers professionalgrade performance with the safety and convenience of 12V DC operation.
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