in 10 offers
The lowest price for Ecowitt WH51 Soil Moisture Sensor right now is $25.57 at ecowittweather, compared across 8 retailers.
The all-time low was $21.19 on 3 June 2026 — today's price is 21% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 28 Oct 2026.
Ecowitt WH51 Soil Moisture Sensor
Last updated at 28/10/2026 10:25:28
Ecowitt WH51 High-Precision Soil Moisture Sensor for Gardens & Lawns
Delivery $10.18
ECOWITT WH51 Soil Moisture Meter, Soil Tester, 16-Channel Garden Plant Water Monitor Tester - Sensor
Delivery $9.85
WH51 Soil Moisture Sensor Soil Humidity Tester - Accessory Only, Can Not Be Used Alone
Delivery between 3–6 Nov $29
Ecowitt WH51 | Wireless Soil Moisture Sensor
Delivery between 2–5 Nov $20
Ecowitt Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem
Free delivery between 6–11 Nov
ECOWITT Soil Moisture Meter WH51, Plant Water Monitor, Soild Hygrometer Sensor for Gardening, Farming Home, indoor and outdoor plants, 868 MHZ
Delivery between 1–5 Nov $41
Ecowitt Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem
Free delivery between 6–11 Nov
WN51 Soil Moisture sensor
Delivery between Mon – Tue $15.40
Ecowitt WH51 High-Precision Soil Moisture Sensor for Gardens & Lawns
Delivery $10.18
ECOWITT WH51 Soil Moisture Meter, Soil Tester, 16-Channel Garden Plant Water Monitor Tester - Sensor
Delivery $9.85
WH51 Soil Moisture Sensor Soil Humidity Tester - Accessory Only, Can Not Be Used Alone
Delivery between 3–6 Nov $29
Ecowitt WH51 | Wireless Soil Moisture Sensor
Delivery between 2–5 Nov $20
Ecowitt Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem
Free delivery between 6–11 Nov
