Application:
Model L521 is useful in all cases we need to control and protect single pump managing its turn-on and
turn-off by different electric installations.
Main features :
Built in function switch:
Applied for water supply by liquid level control or booster
Applied for drainage by liquid level control
Auto/Manual switch
Starts and stops the pump in accordance with the different liquid level or pressure setting.
Push Button Calibration
Automatically stop the pump in the case of water shortage,protecting it from drying running without installing the float switch or liquid probe in the well
Pump accumulative running time displaying
Pump last five fault record displaying
LCD displays pump running information
Protect the pump against Over /Under Voltage ;Over Current; Pump Shaft Rust ;Rapid Cycle etc.
Grade of Protection IP 54
Visual & Audio alarm for fault prompt
About us:
Hunan Leading Science & Technology Development Co., Ltd is the professional manufacturer of intelligent pump control system applied for monitoring and protecting of pumps in home and industry use;
Leading Science & Technology has always been a leader in the production, research & development of intelligent pump control system and relative pump control products. Million of our prime products have been sold on the market for stable quality and reasonable price.
Leading Science & Technology has established stable relations with many pump producers and distributors from China and overseas.
Till now, Leading Science & Technology we have passed CE, ISO9001: 2008 certificate.
Audited Supplier 
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