XH-M214 Soil Moisture Sensor Module with Automatic Humidity Control

Keep your plants perfectly watered with the XH-M214 Soil Moisture Sensor Module. This smart controller measures soil moisture in the 20–99% RH range and automatically triggers your irrigation system when levels drop below your set threshold — no more overwatering or underwatering. Whether you're managing a home garden, greenhouse, or DIY smart-farming project, this module delivers reliable, hands-free soil monitoring.

Key Features

Precise Moisture Detection: Continuously monitors soil humidity from 20% to 99% RH for accurate, real-time readings.
Automatic Irrigation Trigger: Relay output activates your pump or valve when soil moisture falls below the set level — ideal for fully automated watering systems.
Red Digital Display: Clear LED readout shows live soil moisture percentage at a glance.
Adjustable Threshold: Simple potentiometer lets you dial in your desired humidity set point for different plant types and soil conditions.
DIY-Friendly Design: Compact, lightweight build (~28 g) with standard wiring connectors — easy to integrate into Arduino, Raspberry Pi, or standalone irrigation circuits.
Available in 1-piece or 5-piece packs: Scale up your setup with multi-unit bundles for larger gardens or multi-zone systems.
Each order includes: Complete DIY KIT with sensor probe and control board.

Specifications

Model: XH-M214
Measurement Range: 20–99% RH (soil moisture)
Display: Red digital LED
Output: Relay (for pump/valve control)
Weight: Approx. 28 g
Pack Options: 1 PCS / 5 PCS

Perfect For

Home garden and indoor plant automation
Greenhouse irrigation control
Arduino / Raspberry Pi DIY electronics projects
Smart agriculture and urban farming setups

Frequently Asked Questions

Q: What does the XH-M214 Soil Moisture Sensor Module do?

A: The XH-M214 monitors soil moisture levels between 20% and 99% RH and automatically activates a relay to trigger an irrigation pump or valve when the soil drops below your set moisture threshold — making it ideal for automated garden watering systems and DIY smart agriculture projects.

Q: How do I set up the XH-M214 Soil Moisture Sensor Module?

A: Setup is straightforward. Insert the soil probe into your planting area, connect the relay output to your irrigation pump or water valve, and use the built-in potentiometer to adjust your desired soil moisture set point. The red digital display provides live feedback, so you can fine-tune the threshold with confidence. The included DIY KIT has everything needed to get started.

Q: Can I use the XH-M214 with Arduino or Raspberry Pi?

A: Yes! The XH-M214 features standard wiring connectors compatible with Arduino, Raspberry Pi, and other common microcontroller platforms. It's a popular choice for DIY electronics enthusiasts building automated irrigation or smart gardening projects.

Q: How many units do I need for a multi-zone garden?

A: Each XH-M214 module controls one irrigation zone independently. For multi-zone setups, simply order the 5-piece bundle and configure each module with its own sensor probe and relay output for different sections of your garden or greenhouse.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.