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  Kidde KN-COB-IC (900-0120) (21006406) AC Wire-In Carbon Monoxide Alarm w/ Alkaline Battery Back-up

This item qualifies for California Carbon Monoxide CO law requirement. Please click here for details.
Need to replace old Firex alarm?
PLEASE READ. Unless you are replacing Firex FADC, ADC, and AD, you are REQUIRED to replace ALL your old Firex alarms with this KN-COB-IC unit. Otherwise, your old Firex units will NOT be able to communicate with this KN-COB-IC unit. This Kidde KN-COB-IC model can replace the old CO & smoke Firex model:
  • Firex 10000
  • Firex 6035
  • Firex 6040

Since old Firex and new replacement have different wiring harness, the existing wiring harness needs to be changed.

If you don't want to rewire, you need to get a quick convert adapter Kidde KA-F and perform 3-easy-step installation:
  1. Replace the ceiling mounting bracket
  2. Install KA-F adapter and attach existing wiring to the alarm.
  3. The new alarm will now be interconnected and compatible with your Firex alarm system.
Our Price: $26.88
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Product Code: KIDDE-KN-COB-IC

Technical Spec Downloads
Technical Spec

The Kidde KN-COB-IC is an AC wire-in carbon monoxide alarm that warns you and your family of dangerous carbon monoxide levels. It includes multiple contractor friendly features to ensure easy installation and minimal troubleshooting. This alarm interconnects with up to 24 Kidde devices (of which 18 can be initiation) including smoke alarms, CO alarms and heat alarms on one wiring network. The KN-COB-IC includes a 9V battery backup along with a 5 year limited warranty.

This product Kidde KN-COB-IC (900-0120) replaces Firex 10000, Firex 6035 and Firex 6040.

Features & Benefits

  • Battery Pull Tab Eliminates battery installation time and keeps battery fresh.
  • Adjustable Mounting Bracket Allows for fast installation and perfect alignment.
  • Quick Connect Installs quickly with snap-on harness.
  • Sealed Cover Reduces nuisance alarms. Sealed to protect sensor from contaminants prior to installation.
  • Tamper Resist Locking Feature To deter battery and alarm theft.
  • Alkaline Battery Backup for continuous protection in case of power failure.
UPC # 0-47871-00120-0
Part # 900-0120
Power Source 120VAC, 60HZ, 9V battery back-up
Audio Alarm 85dB at 10ft
Temperature Range 40F (4C) to 100F (38C)
Humidity Range 5%-95% relative humidity (RH)
Sensor Electrochemical
Size 5.75" diameter x 1.8" depth
Weight 1lb
Interconnects Up to 24 Kidde devices
Warranty 5 year limited

Kidde KN-COB-IC  diagram

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