DoorKing Plug-In Loop Detectors Manuals & Support

DoorKing plug-in loop detectors fit the loop ports on DoorKing operator boards, so only the loop lead-in needs wiring. They self-tune to track loop drift and weather.

The 9410 is single channel, the 9409 dual channel, and the 9411 single channel with an auxiliary relay. The loop information manual covers loop sizes and installation.

Identify your model

Check the part number on the detector: 9409-010, 9410-010 or 9411-010. The 9416-010 is the low power version for solar operators. The older 9406 has its own manual.

Key specs

9410-010	Single channel
9409-010	Dual channel
9411-010	Single channel with auxiliary relay
Settings	4 frequencies, 4 sensitivities
Loop	Minimum 18 x 48 in; DoorKing preformed loops 4 x 8 ft

Manuals and documents

Installation Manual

Loop Information Manual
Rev. S, 5-22 · 17 pages View PDF: Loop Information Manual (opens in a new tab)
9411 Loop Detector with Auxiliary Relay Manual
9411-065-B-2-15 · 2 pages View PDF: 9411 Loop Detector with Auxiliary Relay Manual (opens in a new tab)
9409-010 Dual Channel Loop Detector Manual View PDF: 9409-010 Dual Channel Loop Detector Manual (opens in a new tab)
9410-010 Single Channel Loop Detector Manual View PDF: 9410-010 Single Channel Loop Detector Manual (opens in a new tab)
9406 Loop Detector Manual View PDF: 9406 Loop Detector Manual (opens in a new tab)

Troubleshooting

Detector LED stays on

Press the reset button on the detector, or lower its sensitivity.
Check the loop wire to ground with a megohm meter. 100 megohms or more is good. Under 50 megohms, replace the loop.
Twist the lead-in at least 6 turns per foot and solder all splices.

Detector never activates

Check loop continuity. It should read near 0 ohms.
Raise the sensitivity.
Move the detector to the other loop port. If it works there, the board port is bad.