What is the after-sales service policy?

We provide free spare parts or controllers for maintenance/replacement and technical training based on order quantity.

How can I trust your company?

We have 15 years of experience, and many pump suppliers worldwide use our controllers.

Where is your factory located?

Our factory is in Changsha, Hunan, China, accessible via air or high-speed train from major cities.

S521 Advanced Single Phase Pump Control Panel with Alerts

Name: S521 Advanced Single Phase Pump Control Panel with Alerts
Brand: Hunan Leading Science & Technology Development Co., Ltd.
SKU: 2104162805

Hunan, ChinaHunan Leading Science & Technology Development Co., Ltd.

US$29.50

1-49 Pieces

US$28.50

50+ Pieces

Sample price:US$28.00/piece.Request sample

Product profile

Customization

Available

Task

Program

Structure

Closed-Loop

Model NO.

S521

Mathematical Model

Linear

Signal

Continuous

Function

Automatic Control, Protection, Measurement

Certification

ISO: 9001, CE

Condition

New

Customized

Material

ABS

Rated Output Power

0.37kw-2.2kw (0.5HP-3HP)

Protection Grade

IP22

Rated Input Voltage

AC220V/AC230V Single Phase

Weight

852g

Transport Package

Paper Carton

Specification

170 x 160 x 85 mm

Trademark

LEADING

Origin

China

HS Code

9032099899

Key features

Comprehensive Protection: Features overload, stall, dry run, under/over voltage protection, and memory function.

Smart LCD Display: LCD screen shows running status, last five faults, and cumulative running time.

Customizable Options: Offers customized rated output power (0.37kw-2.2kw) and protection grade IP22.

Flexible Sensor Support: Connectable to liquid probe, pressure switch, or float switch for various applications.

Long Signal Transmission: Supports signal transmission distance up to 200m for remote monitoring.

ISO Certified Quality: Manufacturing follows ISO 9001 standards with strict testing before shipping.

OEM/ODM Service: Accepts OEM and ODM orders with dedicated engineering team support.

Durable Design: ABS material construction with designed lifetime of 8 years for reliability.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExperienced Team

Hunan Leading Science & Technology Development Co., Ltd.

Hunan, China

Business Type: Manufacturer/Factory, Trading Company, OtherExport Year: 2005-06-08Nearest Port: Ningbo, Shanghai, GuangzhouAverage Response Time: ≤5.44hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, CFR

AI-Powered supplier vetting

SummaryThe supplier is identified as Hunan Leading Technology Development Co., Ltd., a professional technology provider focused since 2001 on intelligent pump controller production, R&D, global sales, and after-sales service. It provides 3D software design, ODM/OEM, and multiple customization options, supported by documented inspection, corrective-action, complaint-handling, quality-assurance, and traceability procedures. Export experience is stated at 18 years, with exports representing 21%–30% of sales, and standard peak- and off-season lead times within 15 working days. However, the supplier has no available SDK, reported no new products in the past year, lacks overseas agents, branches, warehouses, and showrooms, and has no valid manufacturing-capacity contract with its factory and related subcontractors. Evidence is insufficient for certification holding, financial credibility, and customer cases.

Supplier typeThe supplier is Hunan Leading Technology Development Co., Ltd., described as a professional technology supplier focused on pump control and protection solutions, including production, R&D, global sales, and after-sales service. Its company type is recorded as “Combined,” but the exact legal classification is not further explained.

After-Sales capabilityThe company states that it provides after-sales service, maintains in-stock service capacity, and has documented procedures and records for complaint handling, corrective and preventive actions, quality assurance, and traceability. However, it has no overseas agents or branches, no overseas warehouse, no overseas showroom, and reports zero countries with overseas services, limiting demonstrated international after-sales coverage.

R&D capabilityThe supplier is identified as a professional R&D technology supplier and provides 3D software design and ODM services. Nevertheless, it has no available SDK and reported no new products during the past year, so the evidence supports design and development capability but indicates limited recent product innovation.

Production capacityThe supplier reports production operations, documented finished-product inspection procedures, in-stock capability, 18 years of export experience, and lead times within 15 working days in both peak and off seasons. A material control weakness is that the factory and related subcontractors have no valid manufacturing-capacity contract; overseas warehousing is also unavailable.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization, together with 3D software design and ODM services. It also reports OEM capability for well-known brands, providing direct evidence of broad customization and design-manufacturing support.

Client casesThe supplier states that it provides OEM services for popular brands, which indicates experience serving recognized-brand customers. No specific customer names, projects, products, or verifiable case details are provided, so the depth and quality of customer cases cannot be fully assessed.