First Alert SMCO500V Combo vs Ring Alarm Smoke & CO Listener
Side-by-side specs from each maker.
Only the differences are shown.
| First Alert SMCO500V Combo | Ring Alarm Smoke & CO Listener | |
|---|---|---|
| Type | Smoke or CO alarm | Smoke or CO alarm |
| Alarm | combo | listener |
| Sensor | Photoelectric (smoke) and electrochemica | Not listed |
| Power | AA (2 alkaline, replaceable) | 3V lithium battery (included, non-rechargeable) |
| Interconnect | wireless | 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 SMCO500V Combo
A battery-operated smoke and CO combo alarm with voice alerts that give the type and location of the danger. It links wirelessly with other First Alert or BRK alarms.
- Voice alerts with location
- Wireless interconnect with up to 12 other First Alert or BRK alarms and 6 other compatible devices
- Replaceable AA batteries
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