The Kidde KN-COPP-B (model 900-0146) is a discontinued battery-operated carbon monoxide alarm featuring a large backlit digital display — easy to read even in low light. It displays current CO concentration levels updated every 15 seconds, and includes peak level memory to recall the highest CO concentration measured since last reset. A front-load battery door allows battery changes without removing the alarm from the wall.
What is peak level memory on the KN-COPP-B?
Peak level memory records and displays the highest carbon monoxide concentration the alarm has detected since its last reset. This is useful for diagnosing intermittent CO problems — even if the CO source is gone, the peak level shows the maximum exposure your home experienced.
Is the KN-COPP-B still being sold?
This model has been discontinued by Kidde. Consider the COBD or COBD10 as current replacements that offer digital display and longer battery life.
# Kidde Carbon Monoxide Alarm, Battery Operated with Digital Display **Model:** `KN-COPP-B` **Brand:** Kidde **Category:** Co Alarm Battery > The Kidde KN-COPP-B (model 900-0146) is a discontinued battery-operated carbon monoxide alarm featuring a large backlit digital display — easy to read even in low light. It displays current CO concentration levels updated every 15 seconds, and includes peak level memory to recall the highest CO concentration measured since last reset. A front-load battery door allows battery changes without removing the alarm from the wall. ## Specifications | Attribute | Value | |---|---| | Product Type | Carbon Monoxide Alarm | | Alarm Type | co | | Sensor Co | electrochemical | | Power Source | battery-aa | | Battery Backup | No | | Battery Type | AA | | Battery Replaceable | Yes | | 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 | | Discontinued | Yes | ## What's Included - alarm unit - batteries - mounting hardware Source: https://www.jaspecs.com/kidde/co-alarm-battery/kn-copp-b-kidde-battery-co-alarm-digital-display-backlit/