L921 Advanced Water Pump Controller with Single Pump Control Panel Features

• Customization: Available
• Task: Program
• Structure: Closed-Loop
• Model NO.: L921
• Signal: Continuous
• Function: Automatic Control
• Certification: ISO: 9001, CE
• Condition: New
• Customized: Customized
• Material: ABS
• Transport Package: Paper Carton
• Specification: 6 pcs/carton
• Trademark: Neutral
• Origin: China
• HS Code: 9032899090
• Production Capacity: 100000PCS/Year
• Package Size: 45.00cm * 27.50cm * 18.00cm
• Package Gross Weight: 5.000kg

Product Description

Product Overview

NO.1 Product Insights

Detailed Description
Introducing the High-Quality Electric Single Pump Control Panel (L921) - the ideal choice for water pump distributors.
The L921 Pump Controller is a cutting-edge, intelligent, single-phase fully automatic solution with integrated water level control, providing unparalleled ease for water management.

Engineered for excellence in water and wastewater applications, this versatile controller is perfect for water transfer, tank filling, tank emptying, and pressure boosting in hydro-pneumatic systems. Housed in a robust ABS enclosure, it ensures weatherproof reliability and suits both automated and manual operations seamlessly.

Parameter Specifications

General details
Model	L921
Main technical data
Start type	Direct on line
Qty of controlled pump	Single pump
Rated input voltage	AC220V-240V Single phase 50HZ/ 60HZ
Rated output power	0. 37kw-2.2kw (0.5hp-3hp) 3kw-4kw (4hp-5.5hp)
Capacitor	Reserved space for installing stsrt capacitor
Protection function	Over load protection Pump stalled protection Dry run protection with sensor free Under voltage protection Over voltage protection Repeat start protection
Application & Control characteristic	Control and protect general pump Using water level sensor , float switch or pressure switch or level/pressure transmitter to control pump start and stop Applied for water supply by liquid level control through float switch or liquid probe Applied for water supply by pressure control through pressure switch and pressure tank Applied for drainage by liquid level control through float switch or liquid probe
Other features	Pump last five faults record displaying Pump accumulative running time displaying Pump shaft anti-rust Present one dry contact point(BA port) LCD screen locked function under anto state Present RS485 port Present user remote monitor Push button calibration
Main installation data
Working temperature Working humidity Degree of protection Install position Unit dimension (L x W x H)	-25ºC-- +55ºC 20%--90%RH, no drips concreted IP54 Wall mounting 310×220×120mm

Typical Application Scenarios


TyCommon usage contexts include:
- Residential Homes
- Apartment Complexes
- Vacation Retreats
- Agricultural Farms
- Well Water Supply Systems
- Greenhouse, Garden, and Agricultural Irrigation
- Rainwater Harvesting and Reuse
- Industrial Manufacturing Facilities
- Wastewater Management / Sewage Systems

NO.2 Company Background

1) About Us
Brief Introduction
Established in 2001, Leading Science & Technology has been a pioneer in delivering sophisticated pump control and protection solutions to meet diverse user needs.
Today, we stand at the forefront, offering an extensive array of pump control panels and accessories designed for the evolving pump control and protection marketplace.

Our innovative product lineup includes Intelligent Pump Controllers, Sewage Pump Controllers, Booster Pump Controllers, Deep Well Pump Control Boxes, Submersible Pump Controllers, Pump Motor Starters, Programmable Logic Controllers, IoT Pump Controllers, and Reverse Osmosis Controllers.

For additional insights, please visit: pumpcontroller.en.made-in-china.com

Our Office & Dedicated Team

Our organization is structured into three core departments:
1. Sales Team
2. Research & Development Team
3. Production Team
The Sales Team gathers crucial data and technical requirements from pump manufacturers, distributors, and users, relaying this to our R&D Team. This team then evaluates the data, initiating comprehensive research, development, and testing of advanced pump controllers. Once validated, our Production Team expertly manufactures the finalized products.

Thanks to the cohesive efforts of our talented team members, Leading Science & Technology continues to innovate, crafting unique control and protection technologies tailored for the pump industry.

2) Trade Fairs, Communication & Feedback

NO.3 Production Capabilities

We warmly invite you to experience our manufacturing excellence firsthand through a field trip to our factory.

N0.4 Frequently Asked Questions (FAQ)
Can I receive sample products?
Absolutely, we are happy to provide samples for testing purposes. Reach out to us for more information.
What is the typical delivery time?
For standard pump control panels, expect delivery within approximately 7 business days.
For custom or non-standard orders, the delivery timeframe ranges from 15 to 20 days. For comprehensive details, please contact us.
Is OEM or ODM available?
Yes, we offer OEM and ODM services, facilitated by our skilled engineering team. Please note, minimum order quantities are required.
How does your factory manage quality control?
Our production process adheres to the rigorous ISO standard, ensuring top-tier product quality from raw materials to the finished product. Each control panel undergoes full assembly and stringent testing before packaging and shipping;
What is the estimated lifespan of your control panel?
The control panel is engineered for a robust lifespan of 8 years;
What is your policy for after-sales service?
Based on the quantity ordered, we provide complimentary spare parts or controllers for maintenance or replacement and offer comprehensive technical training;
How can I place my trust in your company?
With 15 years of expertise in developing and selling pump control panels, our controllers are trusted by numerous pump suppliers both in China and internationally to control and protect pumps and motors.
Where is your location and transportation guide?
Traveling from Guangzhou to Changsha takes approximately 1 hour by air and 2.5 hours by high-speed train.
Traveling from Shanghai to Changsha takes approximately 1.5 hours by air and 5 hours by high-speed train.
Traveling from Beijing to Changsha takes approximately 2.5 hours by air.
Traveling from Hong Kong to Changsha takes approximately 2 hours by air.

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