Description The Franklin Electric (Incon) FMP-HFS2 Horizontal Float Switch Sensor For EVO Series ATGS is designed for liquid detection in dry fiberglass tank interstitial spaces. Key Features Highly reliable magnetic-float/reed-switch technology. Chemical-resistant materials. Easily fits tight interstitial spaces. Rounded design makes it easy to remove for cleaning and reinstall after an alarm condition has been triggered or for maintenance and testing. For fiberglass tanks, the sensor is pulled into the interstitial space using a “fish” string wire. Optional installation kits are available which include a riser cap and other parts required to complete the installation.