What is the after-sales policy?

We offer complimentary spare parts/controllers and technical training based on order quantity.

How reliable is your company?

We have 15 years of experience and are trusted by numerous pump suppliers globally.

Where is your location?

Located in Changsha, Hunan, China, with convenient access from major cities.

L522 Smart Duplex Pump Control System with RS485 Compatible Protection

Name: L522 Smart Duplex Pump Control System with RS485 Compatible Protection
Brand: Hunan Leading Science & Technology Development Co., Ltd.
SKU: 2228954965

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

US$85.90

5-99 Pieces

US$79.90

100+ Pieces

Sample price:US$78.00/piece.Request sample

Product profile

Customization

Available

Task

Program

Structure

Closed-Loop

Model NO.

L522

Mathematical Model

Non-Linear

Signal

Continuous

Function

Automatic Control

Certification

Condition

New

Customized

Material

ABS

Qty of Controlled Pump

Duplex Pump

Rated Input Voltage

AC220V/AC230V Single Phase

Rated Output Power

0.37kw-2.2kw (0.5HP-3HP) 3-4kw(4HP-5.5HP)

Transport Package

Paper Carton

Specification

6 pcs/carton

Trademark

Neutral

Origin

China

HS Code

9032899090

Production Capacity

100000PCS/Year

Key features

Dry Running Protection: Automatically halts pump during water shortage without needing float switches or probes.

Dual Pump Alternation: Main and standby pumps alternate automatically to ensure balanced wear and efficiency.

Comprehensive Protection: Protects against over/under voltage, open phase, over current, and rapid cycling.

Smart LCD Display: Shows running info, last five fault records, and accumulated running time for maintenance.

Customized Design: Offers customized options for specific pump control requirements and configurations.

Easy Calibration: Features effortless calibration via push button for user convenience and precision.

Auto/Manual Switch: Provides seamless switching between automatic and manual modes for operational flexibility.

CE Certified: Meets CE certification standards ensuring safety and quality for electrical installations.

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: ≤4.87hTerms 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.