First Alert SM210 / SM210V / SM210L 10-Year Smoke vs Ring Alarm Smoke & CO Listener
Side-by-side specs from each maker.
First Alert SM210 / SM210V / SM210L 10-Year SmokeList price not published
Only the differences are shown.
| First Alert SM210 / SM210V / SM210L 10-Year Smoke | Ring Alarm Smoke & CO Listener | |
|---|---|---|
| Type | Smoke or CO alarm | Smoke or CO alarm |
| Alarm | smoke | listener |
| Sensor | photoelectric | Not listed |
| Power | 10-year battery (lithium metal, not replaceable) | 3V lithium battery (included, non-rechargeable) |
| Standards (maker) | Conforms to UL 217 10th Edition Standard | Not listed |
| Replace after | 10 years | Not listed |
| Maker's warnings | Not listed | the device does not detect fire, smoke or carbon monoxide. It hears the sirens of existing smoke or CO alarms. Requires the Ring Alarm or Alarm Pro kit (sold separately). Ring advises placing it within 6 inches of existing alarms. |
First Alert SM210 / SM210V / SM210L 10-Year Smoke
A photoelectric smoke alarm with a sealed 10-year lithium battery and a slim profile. Voice and path-light versions are separate models from the same maker.
- Sealed 10-year battery
- UL 217 10th edition
- The maker lists a lifespan of about 10 years
- Smoke only, no CO sensing
Ring Alarm Smoke & CO Listener
An add-on sensor for a Ring Alarm system that listens for the siren of a smoke or CO alarm you already have and sends a phone notification. It is not a smoke or CO alarm itself.
- Adds phone notifications to existing alarms
- Z-Wave connection to the Ring base station (250 ft range per Ring)
- Battery included
- Does not detect smoke or CO itself
- Needs a Ring Alarm or Alarm Pro kit