Pre-sale: WH52 Soil Moisture/Temperature/EC Sensor, Wireless 3-in-1 Soil Sensor
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Pre-sale Shipping Information:
- The WH52 is a pre-sale product with an early bird $5 discount.
- The first batch is expected to ship in February 2026, and the second batch between April and May 2026. Updates will be provided for any changes.
How to distinguish between the first batch and the second batch?
For the selected 915/868/433 MHz frequencies: if marked with “(Second Batch)”, they belong to the second batch; if not marked, they belong to the first batch.
Key Features:
Note: The WH52 sensor requires a gateway or console for data display.
- Multi-Parameter Measurement: Measures soil moisture, soil temperature, and electrical conductivity (EC).
- Soil Temperature Sensor: High-precision NTC thermistor closely contacts soil particles to capture the temperature actually perceived by roots.
- Soil Electrical Conductivity Sensor: Dual-electrode measurement determines total soluble salts in soil solution (μS/cm).
- Data Transmission & Channel Sharing: Sends data every 70 seconds to a gateway or console; shares 16 soil moisture channels with WH51/WH51L (8 channels for HP350x, WN1900/1920).
- Connectivity & Remote Access: Once paired with a gateway, historical data and alerts for abnormal conditions can be viewed via the ecowitt App or ecowitt.net; supports data upload to Ecowitt, WU, WOW, or a custom server.
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Compact & Durable: IP66-rated for outdoor use; plug-and-play design.
- Power Management: Powered by 1 AA battery (not included) with low-power design; each device has a unique Sensor ID for easy registration and management in the ecowitt App.
Specifications
| Model | WH52 |
| Name | 3-in-1 Soil Sensor |
| Dimensions | 148 x 86 x 25mm |
| Material of Housing | ABS |
| Material of Probe | FR-4(Glass Fiber Reinforced Epoxy) |
| Measurement Principle | Frequency Domain Reflectometry |
| Moisture Range | 0~100% |
| Moisture Accuracy | ±5% |
| Moisture Resolution | 1% |
| Temperature Range | -40~60℃(-40~-140℉) |
| Temperature Accuracy | ±1%℃ |
| Temperature Resolution | 0.1℃ |
| EC Range | 0-10000μS/cm |
| EC Accuracy | 0-1000μS/cm ±100μS/cm；1-1000μS/cm ±15% |
| EC Resolution | 10μS/cm |
| Device Operating Range | -40~60℃ |
| 0%AD setting range | 0~200; Initial value: default to factory calibration |
| 100%AD setting range | 0%AD+10~1000; Initial value: default to its factorycalibration |
| Frequency | 915/868/433MHz depending on location (North American:915MHz; Europe:868MHz; Other areas:433MHz) |
| Sensor reporting interval | 70 seconds |
| Transmission distance in open field |
100m(300 feet) |
| IP Rating | IP66 |
| Power Supply | 1xAA battery (not included) |
| Battery life | Minimum 12 months |
Parts List
1 x WH52 Soil Moisture/Temperature/EC Sensor(NO display console)
2 x Cap cover(One long and one short)
1 x User Manual
Note: Battery not included.
Compatibility Instructions
for all ecowitt network consoles
Please refer to the table to choose the correct sensors and consoles before checkout.
Note:
1) "1/4/8/16" = max number of sensors supported per console (excluding accessories).
2) Upload only = sensor readings shown only in the Ecowitt app and cloud (www.ecowitt.net).
3) Firmware (e.g. V1.9.6 / V2.0.2) = gateway/console must run this version or newer.
