Liquid Sensor


The 924LS is a stainless steel float-actuated sensor capable of detecting the presence of liquid in containment areas. 

Standard Features

Compatible with all 918 tank alarms and system interfaces

1/2” male NPT connection point

Balanced for increased stability when free-standing on flat containment surfaces

3/8” and 1/2" cable connector included


Construction Details

  • PTFE coated wires in PTFE coated jacket
  • Fuel compatible Nitrophyl float
  • 304 Stainless steel shroud



Interstitial space of double wall tanks

Containment sumps

Dispenser pans

Other applications requiring the detection of a liquid leak


Liquid Detection Level

  • Normally Open (NO) 0.625 ± 0.125
  • Normally Closed (NC) 0.125 + 0.125 / - 0.0


Approved Use Locations

UL/ULC Class I, Div 1, Group D (when used in conjunction with the model 918AC, model 918S/D/Q, and model 918SB)



National Work Group on Leak Detection Evaluations list (; Florida DEP EQ-862

Fig Suffix Description Weight (lbs)
924LS 0150 AS Level sensor with 15’ lead wire 1.2
924LS 0250 AS Level sensor with 25’ lead wire 1.3 
924LS 0400 AS Level sensor with 40’ lead wire 1.5
924LS 0600 AS Level sensor with 60’ lead wire 1.7
925 0113 2B Conduit junction housing (NEMA 4)  
925 0114 2B Conduit junction housing (NEMA 7, Group C & D)  


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