SJE-Rhombus SES Controls Build-A-Panels

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Model DTD

Single Phase Duplex Timed Dose Pump Control

The Model DTD Build-A-Panel™ control panel provides greater flexibility by ordering through options, allowing you to customize a standard panel to your specific needs.

The Model DTD control panel provides a reliable means of controlling two alternating 120/208/240V single phase pumps in on-site septic installations requiring timed dosing.

A programmable timer, in conjunction with an alternating circuit board, alternately activates the magnetic motor contactors to turn the pumps on/off and equalizes pump wear.  A low level cutout float overrides the timer to prevent the pump from running dry.  An alarm switch activates the audio/visual alarm system indicating a high liquid level. 

Common applications include sand filter systems, pressure distribution systems, mound systems or any application requiring timed dose control.


Model DTD

Panel Features:

  • NEMA 4X indoor/outdoor enclosure
  • Red alarm beacon provides 360o visual check of alarm condition
  • Alarm horn provides alarm warning of alarm condition
  • Exterior alarm test/normal/silence switch allow horn and light to be tested and horn to be silenced in an alarm condition; alarm automatically resets once alarm condition is cleared
  • Horn silence relay
  • Magnetic motor contactors control pumps by switching electrical lines
  • Hand/Off/Auto (HOA) switches for manual pump control
  • Control and alarm fuses
  • Float switch terminal block
  • Incoming power terminal block
  • Programmable timer with separate variable controls (to set on/off times from .05 seconds to 30 hours)
  • Circuit breakers provides pump disconnect and branch circuit protection
  • Alternating circuit board (U.S. patent # 5,909,532) provides pump control and alternation
  • Spare fuse
  • Ground lugs


  • For a complete listing of available options, please view the backside of the catalog page.

UL/cUL Listed

Five-Year Limited Warranty



Model DTD


14 x 12 x 6 inches (35.56 x 30.48 x 15.24 cm)
NEMA 4X (ultraviolet stabilized thermoplastic with removable mounting feet for indoor/outdoor use)

83 - 85 decibel rating

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