ECOWITT WH52 Soil Moisture Sensor + GW1100 WiFi Gateway – Measure Moisture, Temperature & EC via App

Why the ECOWITT WH52 is the smartest choice for your garden or greenhouse

Do you actually know what is going on in your soil? Many gardeners and growers water on instinct — but too much or too little water is the most common cause of poor plant growth. ECOWITT WH52 wireless soil moisture sensor gives you concrete measurement data so you can make smarter decisions. With built-in EC measurement and a soil temperature sensor in one device.

What does the ECOWITT WH52 measure?

🌊 Soil moisture (0–100%)

The WH52 uses FDR technology (Frequency Domain Reflectometry) — the most reliable method for soil moisture measurement, independent of soil type. Set threshold values in the app to get an alert when the soil becomes too dry or too wet. Never be caught out by wilted plants again.

🌡️ Soil temperature (-40°C to +60°C)

The built-in NTC thermistor measures the actual soil temperature at root depth — not the air temperature. Plant growth depends heavily on soil temperature: too cold in spring stops even the best plant. See exactly when the soil is warm enough for planting or sowing.

⚡ Electrical conductivity / EC (0–10,000 μS/cm)

EC (electrical conductivity) is a direct measure of the concentration of soluble nutrients in the soil. Too low? A shortage of nutrition. Too high? Risk of salt damage to the roots. With the WH52 you make fertilising measurable and repeatable — no more guesswork.

Who is the ECOWITT WH52 for?

• 🏡 Hobby gardeners who never want plants that are too dry or too wet again
• 🌿 Vegetable gardeners who want to water and fertilise more precisely
• 🪴 House plant lovers who also measure outdoors in the garden
• 🌾 Growers and smallholders who want to monitor several beds
• 🏗️ Greenhouse and vegetable growers who want to link soil data to irrigation
• 🏠 Home Assistant / home automation users — the GW1100 integrates natively with Home Assistant, MQTT and ecowitt.net

What is in the box

• 1× ECOWITT WH52 soil moisture sensor (moisture + temperature + EC)
• 1× Ecowitt GW2000 WiFi gateway
• 2× protective cap (1 long + 1 short)
• 1× user manual
• ⚠️ Battery not included — 1× AA battery required

Technical specifications

Specification	Value
Model	ECOWITT WH52
Measuring principle	Frequency Domain Reflectometry (FDR)
Soil moisture range	0 – 100%
Soil moisture accuracy	±5%
Temperature range	-40°C to +60°C
Temperature accuracy	±1°C
EC range	0 – 10,000 μS/cm
EC accuracy	±100 μS/cm (0–1000) / ±15% (1000+)
Update interval	70 seconds
Wireless range	100 m (open field)
Frequency	868 MHz (CE certified)
Water resistance	IP66
Power supply	1× AA battery (not included)
Battery life	Min. 12 months
Channels	Max. 16 sensors per gateway
Sensor dimensions	148 × 86 × 25 mm

Frequently asked questions

Does the WH52 itself need a WiFi connection?

No. The sensor communicates via an 868 MHz radio signal to the supplied GW1200 gateway. Only the gateway needs WiFi. This gives the sensor extremely low power consumption and makes the battery last well over a year.

Which app do I use with the ECOWITT WH52?

The free Ecowitt app (iOS and Android) or the web dashboard via ecowitt.net. Both are free and require no subscription. You see live values and historical graphs, and you can set alerts for thresholds that are too dry or too wet.

Can I connect several WH52 sensors to one gateway?

Yes — the GW2000 supports up to 16 soil moisture sensors at the same time. Handy if you want to monitor several plots, beds or pots separately. Every sensor appears separately in the app with its own name and data.

Does the WH52 also work indoors for house plants?

Yes. Push the sensor into the potting soil and make sure the gateway is within WiFi range. For house plants you do not need to insert the sensor deeply — the measuring points sit near the top of the pin.

Is the WH52 suitable for Home Assistant?

Yes! The GW2000 integrates natively with Home Assistant via the Ecowitt integration. It also supports MQTT, Wunderground and ecowitt.net. Popular with home automation enthusiasts who want to link soil data to automatic irrigation.

How deep should I insert the sensor?

Insert it up to the “MAX DEPTH”marking on the housing. For garden beds a depth of 10–15 cm is recommended — the zone where most roots are active. The sensor then measures soil moisture, temperature and EC at the same root depth.

What is a good EC value for my garden?

For most garden plants and vegetables a healthy EC value lies between 200 and 1200 μS/cm. Demanding crops such as tomatoes and peppers thrive at 2000–4000 μS/cm. With the WH52 you see immediately whether your soil is too poor or too salty, and when extra fertilising is needed.