What is your after sales service policy ?

According to the ordering quantity,we will give some free spare parts or controller for maintenance or replacement and we will give technical training;

How can I trust you ?

We have being developing the pump control panel manufacturing and selling for 15 years ,now many pump supplier from China and overseas are using our controller to control and protect their pump and motor.

Where is your location and transportation guide?

From Guangzhou to Changsha takes 1hour by air, 2.5hour by high speed train From Shanghai to Changsha takes 1.5hour by air, 5hour by high speed train From Beijing to Changsha takes 2.5hour by air From Hong Kong to Changsha takes 2hour by air.

L921 Plus Control Box for Single Phase Drainage Pump Efficiency

Name: L921 Plus Control Box for Single Phase Drainage Pump Efficiency
Brand: Hunan Leading Science & Technology Development Co., Ltd.
SKU: 2224503815

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

US$93.90-96.90

6 Pieces

Sample price:US$96.90/piece.Request sample

Product profile

Customization

Available

Task

Program

Structure

Closed-Loop

Model NO.

L921 PLUS

Mathematical Model

Non-Linear

Signal

Continuous

Function

Automatic Control

Certification

ISO: 9001, CE

Condition

New

Customized

Material

ABS

Transport Package

Paper Carton

Specification

6 pcs/carton

Trademark

Neutral

Origin

China

HS Code

9032899090

Production Capacity

100000PCS/Year

Key features

Comprehensive Protection Functions: Includes overload, stall, dry run, under/over voltage, repeat start, and over-temperature protection.

Versatile Control Methods: Supports 4-20mA transmitters, liquid probes, float switches, and pressure switches for various applications.

Smart LCD Display: Real-time status display, fault records, running time, and settable start/stop values with lock function.

Extended Communication Range: Signal transmission distance up to 1000m with RS485 port and passive dry contact point.

Power Failure Recovery: Features memory function to restore settings automatically after power off and recovery.

Flexible Power Compatibility: Rated input AC220V-240V single phase, 50Hz/60Hz, supporting 0.37kW to 5.5hp pumps.

Customizable Time Delays: Pump start and stop time delays are settable on the LCD screen for precise control.

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: ≤3.89hTerms 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.

Product Q&A

Q:Can I have some samples ?

Yes ,we can send you samples for testing,contact us for details.

Q:What's delivery time ?

For standard pump control panel ,it usually takes about 7 working days; For non-standard,it usually takes 15-20days ,please contact us for details;

Q:Can I do OEM or ODM ?

Yes,we have our own engineering team and we do accept OEM and ODM,but there is ordering quantity requirement;

Q:How does your factory do the quality control ?

Our production process follow up the ISO standard and we control the product quality from the raw materials to the finished product,each of our control panel will be fully assembled and strictly tested before packing and shipping ;

Q:What is the approximate life time for your control panel ?

The designed life time of control panel is 8 years ;