SPI features the most complete line of System Alarms, Float Switches, On-Site Accessories and Control Panels.

SPI has been providing OEM On-Site manufacturers and wholesalers with innovative products and services since 2003. We are keenly aware of the needs of installers and distributors.

Our sales and engineering team is here to help with technical control panel quotes and custom designs. For your convenience, we make every attempt to ship your Observer, Caddy Box, Pilot and Navigator catalog orders and provide quotes within 24 hours. We can often quote, build and ship your controls before you’ve even received a quote from other companies.

Let SPI help with you with all your septic, wastewater and drip irrigation control needs including:

  • Plug-In Pedestal/Post Alarms
  • Indoor/Outdoor High Water Alarms with Battery Back-Up
  • Plug-In /Standard Junction Boxes
  • Custom Junction/Connection Boxes
  • Mechanical Control Duty Switches
  • Mercury Control Duty Switches
  • Standard and Heavy Duty Switches
  • Narrow and Wide Angle Float Switches
  • Pump Up and Pump Down Float Switches
  • Aerobic Control Panels
  • Time Dosing Control Panels
  • Grinder Control Panels
  • Simplex and Duplex Panels with NEMA 4X Enclosures
  • Grasslin and Omron Timers
  • UL and CSA Listed Products
  • Full Line of Accessories and Parts