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: ≤8.61hTerms 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 identified as both a trading company and manufacturer/factory in the electrical and electronics sector. Its stated products include multiple sensor and transmitter categories, while company descriptions highlight sensor technology development, intelligent monitoring solutions, and OEM experience. The supplier reports ISO 9001 certification, 11–20 years of R&D engineer experience, 6–10 quality-control staff, and more than 10 production lines. It has exported since 2011 and reports that 51%–70% of sales are exports, with self-operated import and export rights. An audit by BV is recorded, but the supplied audit result is “0” and the report validity period ended on 2024-11-15; the meaning of the result is not provided. Evidence remains insufficient for financial credibility, after-sales capability, overseas service coverage, detailed customization services, and verified customer cases.

Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory, with a limited-company structure and electrical and electronics trade focus. This supports its ability to operate as a product supplier with manufacturing involvement, although the relative scale of trading versus manufacturing is not stated.

CertificationsThe supplier reports ISO 9001 certification, and a BV audit record is provided with a stated validity period from 2023-11-16 to 2024-11-15. However, the audit result is recorded as “0,” and no interpretation or currently valid certification evidence is supplied, so the positive certification evidence is limited to the stated ISO 9001 holding.

R&D capabilityCompany descriptions state that industry experts participate in sensor R&D and innovation, that advanced production technologies are continuously introduced and developed, and that the supplier has 11–20 years of R&D engineer experience. Specific evidence for new-product output, SDK availability, 3D design, ODM, or other measured innovation deliverables is unknown.

Production capacityThe supplier is identified as a manufacturer/factory, offers several sensor and transmitter product categories, reports more than 10 production lines, and describes industrialized and systematized production. These details provide explicit evidence of substantial production infrastructure, although capacity volume and utilization are not stated.

Customization capabilityThe supplier explicitly states it has experienced OEM services and develops sensing technology solutions for customers, which supports some customization capability. Nevertheless, the availability of ODM, OEM for popular brands, 3D software design, and new-product development services is marked unknown, so the full customization scope cannot be verified.

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.