The DFGJLVF Interconnected Smoke & CO Detector solves the biggest headache in home safety: reliable, whole-home coverage without rewiring. Its wireless interlink system is the key feature. When one alarm detects smoke or carbon monoxide, all six units in your home sound simultaneously. This gives you critical seconds to react, no matter where the danger starts.

Each unit combines photoelectric smoke sensing and an electrochemical CO sensor into a single, modern plate. The photoelectric sensor is particularly good at spotting slow-burning, smoldering fires—the most common residential type. You install them with two screws, and the built-in 10-year lithium battery powers both the sensors and the wireless connection for the entire decade. That’s a set-and-forget level of security, eliminating annual battery chirps and the risk of a dead 9-volt.

The wireless interconnect uses a proprietary frequency, not Wi-Fi, so it works independently of your home network. Just note that these units are designed to communicate only with each other, not with other brands or smart home systems. For straightforward, code-compliant protection across multiple rooms, this 6-pack provides a solid, long-term foundation.