Soil Moisture Sensor

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Picture of WIFI Soil Moisture Sensor with Temperature, IP66

WIFI Soil Moisture Sensor with Temperature, IP66

● Soil temp and moisture measurement, WiFi connected app control ● Moisture accuracy: 0~50% (±3%), 50~100% (±5%) ● Moisture measurement range: 0~100%RH ● Protection class IP66, temperature accuracy ±1°C

$89.32

Picture of Solar Powered Soil Moisture Sensor, 0~100%RH

Solar Powered Soil Moisture Sensor, 0~100%RH

● Solar powered, temperature and moisture detection ● Temperature detection range: -10~60°C (14°F ~ 140°F) ● Moisture detection range: 0~100%RH (Non-condensing) ● Wireless distance: 50M

$108.56

Picture of 3 in 1 Plant Soil Moisture Sensor, Temp/ Illuminance

3 in 1 Plant Soil Moisture Sensor, Temp/ Illuminance

● 3-in-1: Moisture, illumination, temperature ● Moisture: 0 -100%RH ● Illuminance: 0-100000LuX ● Temperature: -10°C~80°C

$103.89

Picture of Smart Soil Moisture Sensor with APP Control

Smart Soil Moisture Sensor with APP Control

● Measure moisture & temperature: 0~100%RH, -20°C~60°C ● Moisture accuracy: 0-50% (±3%), 50~100% (±5%) ● Temperature accuracy: ±1°C ● APP data response time: 60s

$96.76

Picture of Digital Soil Moisture Sensor, Temperature/pH

Digital Soil Moisture Sensor, Temperature/pH

● Soil moisture, soil temperature, soil pH ● Temperature & accuracy: -10°C~90°C (14°F~194°F), ± 1% ● Moisture& accuracy: 0%~90%, ± 10% ● pH& accuracy: 3-9, ± 0.2

$79.41

Picture of TDR Soil Moisture Sensor, RS485 Output

TDR Soil Moisture Sensor, RS485 Output

● Time Domain Reflectometry (TDR) principle ● Moisture range: 0 to 60% m³/m³ ● Output signal: RS485 (Modbus-RTU protocol) ● Moisture accuracy: < ±0.03 m³/m³ (±3%)

$412.82

Picture of Soil Moisture Sensor for Garden, Bluetooth

Soil Moisture Sensor for Garden, Bluetooth

● 0%~100% humidity range ● -10°C ~ 60°C (14°F ~ 140°F) ● 20% to 100% humidity level ● Bluetooth unidirectional communication

$55.89

Picture of Soil Moisture Temperature Sensor, Salts/N-P-K/pH

Soil Moisture Temperature Sensor, Salts/N-P-K/pH

● Output signal: 9-30V RS485 ● Soil temperature: -40°C~80°C ● Soil moisture range: 0 ~ 60% (volumetric water content) ● EC/ salinity/ pH/ N-P-K elements optional

$129.86

FDR Soil Moisture Sensor, ±3%/±2%

● Sensor principle: Frequency Domain Reflectometry (FDR) ● Moisture & temperature range: 0–60% m³/m³, 0°C~50°C ● Moisture accuracy: ±3%, ±2% ● Output signal: 4-20mA/RS485/0~1VDC/0~2.5VDC

$287.65

Picture of Handheld Speedy Soil Moisture Sensor with Digital Display

Handheld Speedy Soil Moisture Sensor with Digital Display

● Moisture range: 0-100% RH ● Temperature range: -40°C~80°C ● Conductivity range: 0-10000 µS/cm ● Handheld, equipped with digital display screen

$90.47

Picture of Tensiometer Soil Moisture Sensor, 4-20mA/RS485

Tensiometer Soil Moisture Sensor, 4-20mA/RS485

● Output signal: 4~20mA/RS485 ● Measurement range: -100kPa~0 ● Measuring depth: 15cm/30cm~120cm ● Protection level: IP67

$136.56

Picture of Multi Depth Soil Moisture Sensor for Agriculture, 3/5 Layers

Multi Depth Soil Moisture Sensor for Agriculture, 3/5 Layers

● 3/5 layers soil moisture/temp/EC (optional) ● Moisture/temperature range: 0-100%, -40~80°C ● Conductivity range: 0-20000µS/cm ● Output signal: RS485 (Modbus protocol)

$184.12

Picture of Capacitive Soil Moisture Sensor, V2.0

Capacitive Soil Moisture Sensor, V2.0

● Capacitive moisture sensor V2.0 ● Operating voltage: 3.3~5.5 VDC ● Output voltage: 0~3.0 VDC ● Interface: PH2.0-3P

$3.47

Picture of Outdoor Soil Moisture Temperature Sensor with Smart Gateway

Outdoor Soil Moisture Temperature Sensor with Smart Gateway

● Soil moisture range: 0% to 100% (non-condensing) ● Detect environmental temperature: -20°C~60°C ● Measurement error: ±2°C; ±10% ● Use with a smart gateway, for sale as a set

$115.79

Soil Moisture Sensor Buying Guide & FAQ

Soil moisture sensor is a device used to measure the water content in soil and help determine whether plants need irrigation. It is commonly used in gardens, greenhouses, farms, and automatic irrigation systems to monitor dry or wet soil conditions, improve watering accuracy, reduce water waste, and support healthier plant growth. Quick answers for gardens, greenhouses, farms, automatic irrigation, and remote monitoring. This guide helps users choose the right soil moisture sensor by application, soil type, signal output, and installation needs.

Soil moisture sensor quick answer

What Soil Moisture Sensor Should I Choose?

Choose a soil moisture sensor based on the application first. For gardens and home growing, a digital soil moisture sensor or app-connected wireless sensor is usually enough for daily checking. Greenhouses often need continuous monitoring, multi-point deployment, and controller integration. Farms usually benefit from RS485, long-distance communication, or multi-depth soil moisture sensors. For automatic irrigation systems, choose a sensor with stable output signals, adjustable thresholds, and delay control to avoid false watering.

Choose by Application

Farm

Field-ready sensing with longer communication range

Automatic Irrigation

Threshold control with stable signal output

Remote Monitoring

Wireless data viewing via app, cloud, or gateway

Garden

Daily soil checking with display or app

Greenhouse

Continuous monitoring with multi-point deployment

Application	Recommended Sensor Type	Why It Fits
Garden	Digital or wireless soil moisture sensor	Easy daily checking, simple display, or app monitoring
Greenhouse	Wireless or RS485 soil moisture sensor	Supports continuous monitoring and multi-point deployment
Farm	RS485, long-range, or multi-depth soil moisture sensor	Better for field durability, deeper monitoring, and longer communication distance
Automatic Irrigation	Sensor with 4–20mA, 0–10V, relay, pulse, or RS485 output	Easier to connect with controllers, valves, pumps, or PLC systems
Remote Monitoring	Wireless soil moisture sensor with app/cloud/gateway	Allows remote data viewing and alerts without frequent manual checking

Digital vs. Wireless vs. RS485 Soil Moisture Sensors

Digital Soil Moisture Sensor	Smart Wireless Soil Moisture Sensor	RS485 Output Soil Moisture Sensor

Local display, quick checking, simple operation	App monitoring, flexible installation, no frequent manual reading	Automation integration, longer communication distance, suitablefor PLC/control systems

Frequently Asked Questions

Q: Are soil moisture sensors accurateenough for automatic irrigation?	Q: Which sensor is best for greenhouse irrigation?	Q: How do I choose a sensor for different soil types?
A: Yes, when calibrated correctly, Set realistic thresholds, add a short irrigation delay, and choose a stable output type for reliable control.	A: A sensor with continuous monitoring capability and controller-friendly output is usually the better choice for greenhouse irrigation.	A: Match the sensor and threshold strategy to sandy soil, clay, loamor potting mix, because different soils hold and release water differently.
Q: Can a soil moisture sensor prevent overwatering?	Q: What output signal should I use for PLC or irrigation controller?	Q: Where should a soil moisturesensor be installed?
A: It helps reduce overwatering by giving earlier moisture feedback, alerts, and better irrigation timing.	A: Common options include 4-20mA, 0-10V, RS485, pulse, or relay depending on the control system.	A: Install near the root zone, at the correct depth, with stable soil contact and suitable waterproof protection.