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L921 Automatic Water Pump Controller With One Button Calibration , Pump Stalled

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L921 Automatic Water Pump Controller With One Button Calibration , Pump Stalled

Brand Name : LEADING
Model Number : L921
Certification : CE
Place of Origin : CHINA
MOQ : 1 set
Price : Negotiable
Payment Terms : D/P, T/T, L/C
Supply Ability : 10000pcs /Month
Delivery Time : 30-35 days
Packaging Details : Carton
Phase : Single phase
Pump controlled quantity : one pump
Enclosure protection grade : IP54
Install position : wall mounting
Displaying : LCD display
Liquid level transfer distance : ≤1000m
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Intelligent Digital Single Phase Water Pump Control Panle- Auto / Manual , One Button Calibration ,With LCD Displaying

Product Brief:

L921 Pump controller ,is a smart and intelligent single phase fully automatic pump controller with built-in water level control .

It is very useful in water and waste water applications,be it water transfer ,tank filling ,tank emptying or even pressure boosting in Hydro-pneumatic applications.It comes in an ABS enclosure for weather-proof is suitable for Auto/Manual operation.

Main technical data
Start typeDirect on line
Qty of controlled pumpSingle pump
Rated input voltage:

AC220V-240V Single phase

50HZ/ 60HZ

Rated output power:0.37kw-2.2kw (0.5hp-3hp)
Capacitor:Reserved space for installing start capacitor

Protection Offered:

Over load protection

Pump stalled protection

Dry run protection with sensor free

Under voltage protection

Over voltage protection

Application &

Control characteristic

Control and protect universal pump

Using water level sensor or float switch 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

Push button calibration

Memory function when power off & recovery

Interactive LCD Screen

Main installation data

Working temperature

Working humidity

Degree of protection

Install position

Unit dimension (L x W x H)

-25℃-- +55℃

20%--90%RH, no drips concreted


Wall mounting

1 70× 1 55× 8.5mm

Main features:

■ Automatic stops the pump in the case of water shortage, protecting it from dry running

without installing float switch or liquid probe in the well

■ Auto / Manual switch

■ Dynamic LCD displaying pump running state

■ Push Button Calibration

■ Pump Accumulative Running Time Displaying

■ Pump Last Five Fault Record Displaying

■ RS485 Communication

■ Starts and stops the pump in accordance with the different liquid level or pressure setting

Three Applications:


  • Can i have some samples ?

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

2) 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;

  • 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;

  • 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 ;

  • What is the approximate life time for your control panel /

The designed life time of control panel is 8 years ;

  • 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.

Product Tags:

single phase submersible pump control panel


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