Single-phase 220V-240V dehydration pump controller L921-S

1  About Product1)DescriptionSingle phase 220V-240V dewatering pump controller L921-SModel L921-S is specially designed for sewage/drainage pump system by adopting level transmitter, pump user can easily set the different level value and observe the dynamic level value in the pipeline.2)Parameter form ApplicationContro

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1  About Product

Single phase 220V-240V dewatering pump controller L921-S

Model L921-S is specially designed for sewage/drainage pump system by adopting level transmitter, pump user can easily set the different level value and observe the dynamic level value in the pipeline.

2)Parameter form
ApplicationControl & protect sewage / drainage pump only
Main technical data
Start type                           Direct on line
Qty of controlled pump                           Single pump
Rated input voltageAC220V-240V Single phase
50HZ/ 60HZ
Rated output power:0.37kw-2.2kw (0.5hp-3hp)
Protection functionOver load protection
Pump stalled protection
Dry run protection with sensor free
Under voltage protection
Over voltage protection
Repeat start protection
Control characteristicConnecting 0.5-4.5V level transmitter to replace float switch or level probe
Pump start and stop according to different depth value setting
Other featuresLCD screen displaying dynamic real time depth & pump running status
Pump start and stop depth value can be easily setting on the LCD screen
Pump shaft anti-rust
Pump accumulative running time displaying
Pump last five faults recording displaying
Presenting one dry contact point (BA port)
Present RS485 port
Present user remote monitor
LCD screen locked function under auto state
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
Wall mounting
310 x 220 x 120mm

2  About us
1)Company Information 

Brief Introduction
Since 2001, Leading Science & Technology company has been providing pump control and protection solutions to 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 products: Intelligent Pump Controller, Sewage Pump Controller, Booster Pump Controller, Deep Well Pump Control Box, Submersible Pump Controller, Pump Motor Starter,Programmable Logic Controller, IOT Pump Controller, Reverse Osmosis Controller.

For more information, please visit:

Our Team
Leading company has three major departments:
1. Sales Team
2. R&D Team
3. Production Team
Sales team collect the information and technical requirements from pump manufacturers, pump distributors, pump users etc and report to our R&D team. According to the information, R&D team will evaluate firstly and start to research,develop and test the pump controller. Finally once the pump controller is workable, our production team will produce.

With our team members' close cooperation, Leading company has been developing many unique control and protection technology for pump industry.

2)Our factory

Single Phase 220V-240V Dewatering Pump Controller L921-S

3)Our trading fair

Single Phase 220V-240V Dewatering Pump Controller L921-S

4)Customers' visit 

Single Phase 220V-240V Dewatering Pump Controller L921-S

5)Qualification &Certificate

Single Phase 220V-240V Dewatering Pump Controller L921-S

1)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.

3)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.

4)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.

5)What is the approximate life time for your control panel ?
The designed life time of control panel is 8 years.

6)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.

7)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.


Contact us

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