XH-M214 Soil Humidity Controller – Auto Irrigation Module
XH-M214 Soil Humidity Controller – Auto Irrigation Module
XH-M214 Soil Humidity Controller with Sensor Module
Take the guesswork out of watering your plants with the XH-M214 Soil Humidity Controller. This compact, easy-to-use DIY module automatically triggers irrigation when soil moisture drops below your chosen threshold — keeping your garden, greenhouse, or potted plants perfectly hydrated without constant monitoring.
Featuring a bright red digital display, the controller lets you set your desired humidity range at a glance. Simply connect the included soil sensor probe, set your target moisture level between 20–99% RH, and let the module handle the rest. When the sensor detects dry soil, the relay activates your pump or valve automatically.
Key Features
- Adjustable Humidity Range: 20–99% RH — suitable for a wide variety of plants and growing conditions
- Red LED Digital Display: Clear, easy-to-read readout for quick monitoring
- Automatic Control: Relay output triggers irrigation devices automatically based on soil moisture level
- Wide Operating Temperature: Rated for -40°C to +85°C — reliable in both indoor and outdoor environments
- 12V DC Power Supply: Compatible with standard low-voltage setups
- DIY Kit Package: Ideal for electronics hobbyists, gardeners, and makers looking to build a custom auto-watering system
- Compact & Modular Design: Easy to integrate into existing irrigation setups or DIY projects
Specifications
| Model | XH-M214 |
| Humidity Range | 20–99% RH |
| Supply Voltage | DC 12V |
| Operating Temperature | -40°C to +85°C |
| Display | Red LED Digital |
| Package | DIY Kit (1 x Controller + Soil Sensor Probe) |
| Condition | New |
| Country of Origin | Made in Mainland China |
Perfect For
- Home gardens and potted plant care
- Greenhouse and grow-tent automation
- DIY smart irrigation projects
- Arduino/Raspberry Pi integration
- Small-scale agricultural monitoring
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Frequently Asked Questions
Q: What does the XH-M214 soil humidity controller do?
A: The XH-M214 is an automatic soil moisture controller that uses a soil sensor probe to measure the humidity level in the ground. When the moisture drops below your set threshold (anywhere from 20–99% RH), it activates a relay to turn on an irrigation pump or valve, then shuts it off once the target level is reached. It's ideal for building an automated watering system for gardens, greenhouses, or indoor plants.
Q: What power supply does the XH-M214 require?
A: The XH-M214 humidity controller runs on a DC 12V power supply, making it compatible with standard low-voltage power adapters and DIY electronics setups. It is not included in the kit, so you will need a 12V DC adapter rated appropriately for your relay load.
Q: Is this module suitable for outdoor use?
A: Yes. The XH-M214 is rated for an operating temperature range of -40°C to +85°C, making it capable of withstanding both cold and warm outdoor environments. For best longevity, it is recommended to protect the control board from direct rain or water exposure by housing it in a weatherproof enclosure.
Q: How do I set the humidity threshold on this controller?
A: The controller features a simple push-button interface alongside the red LED digital display. You can scroll through and set your desired upper and lower humidity thresholds directly on the unit. When soil moisture falls outside the set range, the relay automatically activates the connected irrigation device.