CD series

CD displays countdown digits only. HM provides overlapping hand/person symbols; DIL places hand/person side by side; SPC combines hand/person/countdown in a 16 × 18-inch face. Select CD when the project needs a separate countdown display in a compatible housing. A CD module cannot supply the missing WALK and DON’T WALK symbols by itself.

Specifications & documents
CD-WM-HM-EH-Series 12-inch Pedestrian Signal Module Spec-Sheet · DIL Series 16” x 18” Pedestrian Signal Spec Sheet · SPC series 16 with18 pedestrian countdown signal module

Further reading
16-Inch Pedestrian Signal Modules: Size and Display Guide

The current square 12 × 12-inch specification lists TP12N-CD at 7.5W. The Canadian round product uses TSL-PED-12-CD-CR1 and lists 8.6W. Both are published for 80–135Vac, but format, model and approval evidence differ. For a U.S. bid, choose the appropriate square configuration unless the approved housing and project documents specifically require another format; a common nominal diameter is not enough.

Specifications & documents
CD-WM-HM-EH-Series 12-inch Pedestrian Signal Module Spec-Sheet · CD Series 12″ Countdown Signal Module (Canada)

Further reading
Traffic Signal Approval: ITE, ETL and DOT Lists

The current 12-inch square CD sheet gives a 9-inch digit height and Portland Orange countdown indication. It also includes dimension drawings for the face and depth. These define the module’s display and fit; they do not prescribe the intersection’s approved countdown sequence. Keep the matching drawing with the housing selection instead of relying only on a “12-inch countdown” label.

Specifications & documents
CD-WM-HM-EH-Series 12-inch Pedestrian Signal Module Spec-Sheet

Further reading
16-Inch Pedestrian Signal Modules: Size and Display Guide

The module displays the countdown within the connected system; its published electrical/optical sheet does not define every controller’s timing program or recovery behavior. Test the exact controller and cabinet through the agency-required pedestrian sequence, including required preemption/recovery conditions. Document the accepted configuration. Do not describe installing CD as an automatic correction of signal timing or accessibility.

Specifications & documents
CD-WM-HM-EH-Series 12-inch Pedestrian Signal Module Spec-Sheet

For TP12N-CD, the sheet specifies 80–135Vac, power factor above 0.90, THD below 20%, response under 75ms and turn-off voltage above 35Vac. Compare those with the actual cabinet/load-switch documentation and the required termination. A similar face dimension does not prove the electrical or monitoring behavior of a replacement circuit.

Specifications & documents
CD-WM-HM-EH-Series 12-inch Pedestrian Signal Module Spec-Sheet

Further reading
Traffic Signal Approval: ITE, ETL and DOT Lists

CD supplies a visual countdown indication. It does not provide the hand/person symbols, audible/vibrotactile indication or pushbutton functions of a complete accessible crossing. Specify those components and their controller interaction separately. Adding CD can improve the visual information available, but should not be represented as complete accessibility compliance for the intersection.

Specifications & documents
CD-WM-HM-EH-Series 12-inch Pedestrian Signal Module Spec-Sheet

Further reading
Pedestrian Countdown Displays and Accessible Pedestrian Signals

The current 12-inch square sheet lists a five-year limited warranty, −40°C to +74°C operation, UV-stabilized polycarbonate lens and O-ring sealing. Its 70% intensity-at-100,000-hours statement concerns light-output maintenance, not a warranty of that duration. Maintain the installed housing seal and keep the exact square/round model’s warranty and installation documents in the service record.

Specifications & documents
CD-WM-HM-EH-Series 12-inch Pedestrian Signal Module Spec-Sheet · CD Series 12″ Countdown Signal Module (Canada)

Further reading
Long-Life LED Traffic Signals: Replacement Cost and ROI

Record square versus round format, TP12N-CD versus the Canadian model, operating supply, connector/termination and accepted controller configuration. Use the actual energized countdown duration and the selected model’s wattage for energy comparison. Keeping these distinctions on the spare order prevents a matching-size but different-format countdown module from being dispatched to the wrong signal head.

Specifications & documents
CD-WM-HM-EH-Series 12-inch Pedestrian Signal Module Spec-Sheet · CD Series 12″ Countdown Signal Module (Canada)

Further reading
16-Inch Pedestrian Signal Modules: Size and Display Guide