The Kidde KN-COPP-3 is an AC plug-in carbon monoxide alarm with a digital display that shows CO concentration levels updated every 15 seconds. A dedicated Peak Level Button displays the highest CO level recorded since the alarm was last reset or unplugged — useful for diagnosing intermittent CO events. A Test/Reset button verifies circuit operation and silences alarms. This model is to be replaced by the KN-COP-DP-10YL, which adds a 10-year battery backup.
Does the KN-COPP-3 have battery backup?
No. The KN-COPP-3 operates on AC power only and does not have battery backup. If power is interrupted, the alarm will stop functioning. For continuous protection during outages, consider the KN-COP-DP-10YL, which includes a 10-year sealed battery backup.
What is the Peak Level Button for?
Pressing the Peak Level Button displays the highest carbon monoxide concentration recorded since the unit was last reset or unplugged. This helps you understand peak CO exposure levels even if the source has been removed or resolved.
# Kidde AC Plug-In Carbon Monoxide Alarm with Digital Display **Model:** `KN-COPP-3` **Brand:** Kidde **Category:** Co Alarm Plugin > The Kidde KN-COPP-3 is an AC plug-in carbon monoxide alarm with a digital display that shows CO concentration levels updated every 15 seconds. A dedicated Peak Level Button displays the highest CO level recorded since the alarm was last reset or unplugged — useful for diagnosing intermittent CO events. A Test/Reset button verifies circuit operation and silences alarms. This model is to be replaced by the KN-COP-DP-10YL, which adds a 10-year battery backup. ## Specifications | Attribute | Value | |---|---| | Product Type | Carbon Monoxide Alarm | | Alarm Type | co | | Sensor Co | electrochemical | | Power Source | plugin-ac | | Voltage | 120V AC | | Battery Backup | No | | Battery Replaceable | No | | Voice Alerts | No | | Smart Wifi | No | | App Connected | No | | Digital Display | Yes | | Low Level Co Alert | No | | Explosive Gas Detection | No | | Indoor Air Quality | No | | Peak Level Memory | Yes | | Hush Feature | Yes | | Interconnect | No | | Interconnect Type | none | | Alarm Db | 85 | | Ul Co | UL 2034 | | Warranty Years | 10 | ## What's Included - alarm unit Source: https://www.jaspecs.com/kidde/co-alarm-plugin/kn-copp-3-kidde-plugin-co-alarm-digital-display/