24 VDC Polarity Reversal Module for 260-CO Tandem Sounder Signaling
SKU KD-405-01
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The Kidde 405-01 enables tandem sounder signaling across multiple 260-CO carbon monoxide detectors on the same notification appliance circuit. When one 260-CO detects CO and goes into alarm, the module reverses polarity on the NAC, triggering the built-in sounders on every other 260-CO in the group - no separate notification appliances required for CO alert coverage.
Built for the commercial fire alarm installer
One 405-01 module wires into each 260-CO detector you want in the tandem group. The module sits between the NAC circuit and the detector's terminals, using the existing 14-22 AWG field wiring. 24 VDC power comes straight from the NAC - no auxiliary supply to mount or wire. The whole assembly fits inside the 260-CO housing, keeping the ceiling clean.
Key benefits
- Tandem CO notification without separate appliances: one detector alarms, all 260-CO sounders in the group activate
- No extra power supply: 24 VDC powers directly from the existing NAC circuit
- Fits inside the 260-CO housing: compact PCB module with pigtail leads, nothing exposed on the ceiling
- Standard wire compatibility: connects with 14 to 22 AWG field wiring already on the job
- Part of a UL 2075 listed system when paired with Kidde 260-CO detectors
System requirements
Each 405-01 module pairs with one Kidde 260-CO Carbon Monoxide Detector. The tandem group operates on a supervised 24 VDC NAC circuit from a compatible Kidde or Edwards fire alarm control panel. One module per detector in the tandem group.
Specifications
| SKU | KD-405-01 |
|---|---|
| Brand | Kidde Commercial |
| Form factor | PCB module with pigtail leads (mounts inside 260-CO housing) |
| Power input | 24 VDC (from NAC circuit) |
| Compatibility | Kidde 260-CO Carbon Monoxide Detector |
| Wire size | 14 to 22 AWG |
| Operating temp | 32°F to 120°F (0°C to 49°C) |
| Compliance | UL 2075 (as part of 260-CO system) |
