Level Sensors & Switches

LS-700F Single-Point Level Switch

Part Number: 144900
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LS-700F Series Single-Point Level Switch provides overfill protection for refrigerant tanks and enables safe compliance with EPA directives to recover refrigerants. These units are designed to fit standard 30# and 50# D.O.T. approved refrigerant tanks. They provide 80% full shutoff capability when used as an integral part of a recovery system.

  • Overfill protection for refrigerant tanks
  • U.L. Recognized
  • Provides 80% Full Shutoff Capability


  • Overfill protection for refrigerant tanks
  • U.L. Recognized
  • Provides 80% Full Shutoff Capability 
Sensor Type
Float Type
Primary Material Of Construction
Wetted Materials
Brass, 304 Stainless Steel
Stem Material
Float Material
304 Stainless Steel
Float Diameter
Actuation Level
3 3/16"
Min. Liquid SG
Maximum Pressure
400 psi
Minimum Temperature
Maximum Temperature
Mounting Size
3/4" NPT Male
Mounting Style
Electrical Termination
AMP #206060-1 Plug
Switch Type
SPST (20 VA)
Switch Operation
Normally Closed (Non-Reversible)

Reed Switch Protection

Format .pdf
Size 56 KB

Gems Sensors Instructions, LS-700F

Format .pdf
Size 140 KB

Gems Sensors Catalog, Specialty Switches

Format .pdf
Size 4 MB
  • Alt Energy Equipment
  • General Industry
  • General Industry - Other
  • HVAC/R - Air Conditioning Systems
  • HVAC/R - General HVAC
  • HVAC/R - Heating/Condensate Systems
  • HVAC/R - Other
  • HVAC/R Equipment
  • Power Generation - Green Energy
  • Power Generation - Other
What is the mating connector for part #128500?

Mating Plug Brad Harrison 70303 series.

What is the mating connector for part# 144900?

Mating Plug Amp # 206060-1

Is there a minimum current flow requirement for a standard 20VA reed switch?

Yes, very low currents (< 5ma) can prevent “cleaning” of the contacts or not have enough energy to maintain low contact resistance. 5ma is likely a good minimum for our standard 20 VA switch. But you also want enough voltage. Approximately, 5V, 5ma is a good minimum. For low current switching we recommend a 10 VA reed switch which can better handle lower loads. (1ma for example).

What is the life expectancy of a reed switch?

A reed switch is extremely rugged and designed to operate reliably for many years, under ideal conditions, up to about 2 million cycles. To achieve maximum service life, reed switches benefit from protected electrical supply.