First Alert
First Alert Onelink Safe & Sound
—
Released 2017
Best Smart Smoke Detectors · head-to-head
First Alert Onelink Safe & Sound vs Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO)
A sourced, side-by-side comparison. Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO) is cheaper at $39. Every spec and price links to its source.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | First Alert Onelink Safe & Sound |  Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO) |
|---|---|---|
| US price | — | $39 |
| Brand | First Alert | Ecolink |
| Released | 2017 | — |
| Sensor type | photoelectric | audio_listener |
| Detects co | Yes | Yes |
| Power | hardwired | battery |
| Interconnect | wireless | wireless |
| App alerts | Yes | Yes |
| Voice location alerts | Yes | No |
| Sensor life yr | 10 | — |
| Self test | Yes | No |
Sources — First Alert Onelink Safe & Sound: firstalertstore.com (verified 2026-08-16). Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO): homecontrols.com (verified 2026-08-16).
What's the difference between the First Alert Onelink Safe & Sound and Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO)?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Sensor type: First Alert Onelink Safe & Sound photoelectric vs Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO) audio_listener
- Power: First Alert Onelink Safe & Sound hardwired vs Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO) battery
- Voice location alerts: First Alert Onelink Safe & Sound true vs Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO) false
- Self test: First Alert Onelink Safe & Sound true vs Ecolink Z-Wave Plus FireFighter (FF-ZWAVE5-ECO) false