DUALPUMP CONTROLLER

Certification:

Hunan Leading Technology Development Co., Ltd
Hunan Leading Technology Development Co., Ltd
Hunan Leading Technology Development Co., Ltd

LEADING PRODUCT

PROVIDE PUMP CONTROL AND PROTECTION SOLUTIONS FOR PUMP USERS.

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SL-T22

This product is primarily designed for the protection and control of up to two directly started single-phase sewage lifting pumps.

SL-T21

This product is primarily designed for the protection and control of a directly started single- phase sewage lifting pump .

SLE22

The controller is useful in all cases we need to control and protect duplex pump managing its turn-on and turn off by different electric installations.

SLE21

The controller is useful in all cases we need to control and protect single pump managing its turn-on and turn off by different electric installations.

ABOUT US


  Since 2001, Leading Science & Technology company has been provide pump control and protection solutions for pump users.
  Today Leading Science & Technology offers a wide range of pump control panel & pump control accessories for the pump control and protection market.
  Our philosophy has not changed :To provide quality, variety and system solutions for our pump users.
  2001, LEADING company established, focusing on production, science and technology research and development, global sales and after sales service for intelligent pump controller in water pump market.
  2002-2003, We set up the factory in Changsha city, successfully developed China's first sensor free installation intelligent deep well submersible pump controller and bring to the pump market.
  2004, Obtained the national invention patent certificate, certificate of design for intelligent pump controller from China's State Intellectual Property Office (SIPO).
  2005, Set up international marketing department and export to international pump market.
  2006-2009, Successfully developed China's first One-Push button parameter calibration, power factor protection, anti-corrosion probe etc pump control and protection technology.
  2012, Acquired the title of Hunan High Tech Enterprise from local government.
  2013-2014, Leading intelligent pump controller passed the strict test, successfully become the auxiliary control unit of some big pump manufacturer overseas.
  2015, Successfully launched Non-Contact Sewage Pump Control System and apply to Changsha metro sewage system.
  2017, Moved into new factory and expanded production scales, Leading has gone to a new level.
  2018, With the expanded production scales, our annual sales come to a top in our history.
  2019-2020, Covid-19 overwhelming the world. All LEADING staff working tightly overcome the hard time. And we send some mask to our customer to help them out of the difficult situation.
  2021, In the post-epidemic era, production and business have resumed. Sales performance reaches new highs.
  2022-2024, Our products and services are sold to more than 100 countries and regions around the world.
  We are committed to providing customers with better products and services. Leading is on the way. Keep moving forward!

2005

ESTABLISHMENT TIME

YEAR

100 +

BUSINESS SCOPE

COUNTRIES

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图片名称

HONOR

PROFESSIONAL MANUFACTURER OF INTELLIGENT WATER PUMP CONTROLLERS

ISO
Single phase control box test report and certificate
Single phase control box test report and certificate
Three phase control box test report and certificate
Three phase control box test report and certificate

The product has passed lSO quality

certifcation and all qualifcations are complete

• WON THE GOLD AWARD AT THE CHINA INTERNATIONAL PATENT AND BRAND EXPO

• THE PRODUCT HAS PASSED THE EU CE QUALITY MANAGEMENT SYSTEM CERTIFICATION

• THE PRODUCT HAS PASSED THE ISO QUALITY MANAGEMENT SYSTEM CERTIFICATION

• AWARDED THE CERTIFICATE OF HIGH-TECH ENTERPRISE

• AWARDED AAA CREDIT RATING ENTERPRISE CERTIFICATE AND BRONZE MEDAL

11/09

2026

[2026] LEADING (Hunan Leading Technology Development Co., Ltd.) E1-D1/W Single-Phase DOL Water Pump Controller – For AC220V Residential & Building Water Supply and Basement Sewage Discharge

Hunan Leading Technology Development Co., Ltd. (LEADING) launches the E1-D1/W single-phase intelligent water pump controller with a one-controller-one-pump direct-on-line (DOL) solution. It is designed for AC220V single-phase DOL pumps ranging from 0.37 kW to 4 kW. Supporting dual liquid level and pressure control, the unit offers multi-protection including overload, dry-run due to water shortage, locked rotor, undervoltage and overvoltage, with IP65 ingress protection. It can connect to a remote communication module for voltage & current display and fault notification push.

11/09

2026

[2026] LEADING (Hunan Leading Technology Development Co., Ltd.) A8/G DOL Intelligent Water Pump Controller – Built‑in WIFI/4G Remote Interface for Remote Monitoring of Municipal & Building Water Supply and Drainage

Hunan Leading Technology Development Co., Ltd. (LEADING) launches the A8/G intelligent water pump controller with a one-controller-one-pump direct-on-line (DOL) scheme. It works with three-phase DOL pumps of 0.75–15 kW and single-phase DOL pumps of 0.37–4 kW. The unit comes with built-in communication interfaces and supports remote monitoring via mobile APP paired with WIFI/4G modules. The controller integrates protection against pump overload, dry-run due to water shortage, locked rotor, undervoltage and overvoltage, with an IP65 high ingress protection rating.

11/09

2026

[2026] LEADING (Hunan Leading Technology Development Co., Ltd.) T9/G Dual-Pump DOL Intelligent Controller – Automatic Pump Alternation & Fault Switchover for Municipal and Building Water Supply & Drainage

Hunan Leading Technology Development Co., Ltd. (LEADING) launches the T9/G intelligent water pump controller adopting a one-controller-two-pump direct-on-line (DOL) solution. Suitable for three-phase DOL pumps of 0.75–15 kW and single-phase DOL pumps of 0.37–4 kW, it supports dual-pump alternation and automatic switchover upon fault. The controller integrates protection against pump overload, dry-run caused by water shortage, locked rotor, undervoltage and overvoltage, and features an IP65 high ingress protection rating to enhance the operating reliability of dual-pump systems.