Level Sensors & Switches

LS-800-5 Single-Point Level Switch

Part Number: 172988
Image is of similar product


LS-800-5 Series Single-Point Level Switches are ideal for large or small tanks or where access to the inside is impractical or impossible. LS-800-5 Series units mount completely outside of the tank at the level actuation point and is offered in brass or stainless-steel housing 3/4" NPT ports.

  • Ideal for Large or Small Tanks
  • Mounts Outside the Tank
  • 3/4" Brass or Stainless-Steel NPT Ports


20 days
Lead Time

Lead-times apply to standard parts & configurations. Expedited shipments available by contacting factory. Lead-times may vary based on quantity and/or non-standard configurations.

CE ROHS Gems Compliant CSA


  • Ideal for Large or Small Tanks
  • Mounts Outside the Tank
  • 3/4" Brass or Stainless-Steel NPT Ports 
Sensor Type
Float Type
Primary Material Of Construction
Wetted Materials
Brass, 316 Stainless Steel, Berylium Copper
Stem Material
Float Material
316 Stainless Steel
Float Diameter
2 1/16"
Actuation Level
Min. Liquid SG
Maximum Pressure
500 psi
Minimum Temperature
Maximum Temperature
Mounting Size
3/4" NPT Female
Mounting Style
Electrical Termination
Feraloy Junction
Switch Type
Switch Operation
UL Recognized, CSA Listed, CE, Explosion Proof, ROHS

Reed Switch Protection

Format .pdf
Size 56 KB

Gems Sensors Instructions, LS-800 Type 5

Format .pdf
Size 637 KB

Gems Sensors Catalog, Alloy Bottles

Format .pdf
Size 777 KB
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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.