What is the warranty for your product?

Warranty: 2 years, Lifetime maintenance.

What is the measuring range for soil humidity?

The range for soil humidity is 0%-100%.

Firstrate Sem225 RS485 High Accuracy Agriculture NPK Fertilizer Soil NPK Sensor

Name: Firstrate Sem225 RS485 High Accuracy Agriculture NPK Fertilizer Soil NPK Sensor
Brand: Chengdu Sentec Technology Co., Ltd.
SKU: 2097660475

Sichuan, ChinaChengdu Sentec Technology Co., Ltd.

US$25.00-35.00

1 Piece

Product profile

Customization

Available

Product Name

Agricultural 4-20mA Soil pH Nutrient Sensor

Accuracy

Humidity: ±3% Rh (5~95% Rh, 25°c),

Model NO.

SEM225

Measuring Range

-40~+80°c, 0~100%Rh

Probe Length

70mm

Electrical Connections

Direct Lead

Transport Package

Carton

Specification

18*18*17 0.5Kg

Trademark

SENTEC

Origin

China

HS Code

9033000090

Production Capacity

50000

Key features

High Precision Measurement: Calibrated by actual drying and weighing method with high precision and stable output.

Multi-Parameter Detection: Measures soil humidity, temperature, EC, pH, and NPK simultaneously.

Wide Application Scope: Ideal for agricultural greenhouses, flower cultivation, and pasture grasslands.

Robust IP68 Protection: Fully waterproof and dustproof design suitable for harsh soil environments.

Flexible Signal Output: Supports 4-20mA, 0-5V, and RS485 interfaces for easy integration.

Certified Quality Assurance: ISO, CE, and RoHS compliant with complete pre-inspection by QC departments.

Company profile

High Repeat Buyers ChoiceIn-stock CapacityCustomization from SamplesProduct Certification

Chengdu Sentec Technology Co., Ltd.

Sichuan, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2011-03-01Average Response Time: ≤9.89hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, CPT, Others, FCA

AI-Powered supplier vetting

SummaryChengdu Sentec Technology Co., Ltd. is a China-based limited company in Sichuan operating as both a trading company and manufacturer/factory in electrical and electronics. Its stated product range centers on industrial sensors and meters. Available evidence indicates ISO 9001 certification, more than 10 production lines, 6–10 quality-control staff, and 11–20 years of R&D engineer experience. The company describes sensor-technology R&D, intelligent factory-monitoring expertise, OEM experience, and export activity since 2011, with 51%–70% of sales from exports and self-operated import/export rights. However, several operational areas remain unverified, including overseas service facilities, 3D design, ODM/OEM details, SDK availability, sustainability documentation, customer cases, and raw-material traceability. The audit record was conducted by BV, but its evaluation result is recorded as 0 and the stated report validity ended in November 2024; the meaning of the result is not specified, so no definitive...

Supplier typeThe supplier is explicitly identified as both a Trading Company and Manufacturer/Factory, with a Limited Company ownership structure and operations in electrical and electronics. This supports classification as a hybrid trading and manufacturing supplier.

CertificationsThe supplier reports ISO 9001 certification. A BV audit is also recorded, but the audit evaluation result is listed as 0 and the report validity ended on 2024-11-15; because the meaning of the result is not provided, only the ISO 9001 holding is treated as positive evidence.

R&D capabilityThe company describes industry experts engaged in sensor R&D and innovation, a team focused on intelligent factory monitoring, and 11–20 years of R&D engineer experience. However, new-product output, SDK availability, and several specific technical-development capabilities are unknown, so the evidence supports R&D experience but not a complete innovation assessment.

Production capacityThe supplier reports operating more than 10 production lines and maintaining 6–10 quality-control staff. Its listed product scope includes pressure, temperature, liquid-level, density, flow, humidity, and wind-speed sensors/meters, providing explicit evidence of manufacturing scale and product coverage.

Product Q&A

Q:How long will you give me the reply?

We will contact you in 1 hours as soon as we can.

Q:Could I visit your factory?

Sincerely invite you to visit our factory.

Q:Do you provide samples?

Yes, we have materials in stock to help you to get the samples as soon as we can.

Q:What is the quality of the managements?

We have a complete quality control system, all of our products will be fully pre-inspection by QC departments before shipping to you. We have the certification of ISO, CE we could send the certification test of our company to you.

Q:What is your terms of payment?

We could accept T/T, Paypal, WU, Credit Assurance.

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Firstrate Sem225 RS485 High Accuracy Agriculture NPK Fertilizer Soil NPK Sensor