Kidde Smoke & Carbon Monoxide Detector, Hardwired Interconnect, Voice Alert – Pack of 2

All-in-one protection for homes

The Kidde KN-COSM-IBA combines smoke and carbon monoxide detection in a single, hardwired unit with a battery backup. It runs on 120 V AC and continues to provide detection during power outages, so you can rely on continuous awareness even when the lights go out.

With ionization sensing for smoke and a dedicated CO detector, this interconnected system gives you clear, actionable alerts. A red LED flashes during an alarm, and a spoken warning distinguishes between Fire, Carbon Monoxide, and Low Battery, helping you act quickly in busy homes or dimly lit hallways.

• Ionization sensing detects invisible smoke particles for quicker notification in common living areas.
• Voice alerts clearly identify the threat type without needing to read small print on a panel.

Power, alerts, and interconnectivity

This detector operates on a 120 V supply with a two‑AA battery backup to maintain coverage during outages. The Test-Hush feature allows temporary silencing for roughly 9 minutes, while the tamper‑resistant design helps keep the unit in place in everyday rooms.

• Test button verifies operation without triggering a full alarm.
• Tamper‑resistant construction discourages removal from wall or ceiling.

Networked protection and standards

You can interconnect up to 24 Kidde devices in a multi-station arrangement. NFPA limits apply: up to 18 initiation devices, with 12 smoke alarms; you can also add up to six strobe lights or relay modules to the network. The KN-COSM-IBA is UL certified and backed by a 10-year limited warranty, meeting safety benchmarks such as UL 2034, UL 217, NFPA 72, and other applicable codes.

Real-world use and maintenance tips

Ideal for bedrooms, hallways, and living spaces, this two-pack offers cohesive coverage across levels of a home. The compact form and simple mounting make installation straightforward, while the green LED flashes to indicate normal operation and the red LED signals an alarm.

Practical scenarios include late-night wake‑ups driven by distinct auditory warnings, quick verification during routine checks, and reliable CO monitoring during the day when you’re away from the kitchen. For ongoing protection, test the devices regularly, replace the backup batteries as needed, and keep interconnect devices within the NFPA guidelines to maintain a harmonious alert network.

In short, this two‑pack from Kidde aims to deliver clear, multi‑threat awareness with easy daily use, a robust backup during outages, and a network that can grow with your home safety needs.