What is the most reliable smart smoke detector in the market?
This page compares 5 smart smoke detector in the markets with verified specifications and prices. Top options include Heiman HS1SA Smart Smoke Detector, Kidde Smart KN-COP-DP-10YL-AQ-WF, Google Nest Nest Protect Smoke and Carbon Monoxide Alarm. Prices range from £19 to £295. All data is sourced from manufacturer documentation and specialist retailers.
| Product ⇅ | Price ⇅ | Battery Life (years) ⇅ | Connectivity Type ⇅ | Number of Smoke Sensitivity Levels ⇅ | Carbon Monoxide Detection ⇅ | Temperature Range (°F/°C) ⇅ | Alarm Volume (dB) ⇅ |
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Heiman HS1SA Smart Smoke Detector
US
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£18.61 ≈ | 10 | — | — | — | -10°C to +50°C | 85 |
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The Heiman HS1SA is a compact photoelectric smoke detector powered by a replaceable lithium battery with a stated 10-year battery life. It provides real-time smoke monitoring, low-battery alerts, test and hush controls, and ceiling or wall mounting, making it suitable for homes, hotels, and restaurants. ★ Ideal forIt suits buyers seeking a reliable smart smoke detector because it offers a 10-year battery life, real-time smoke monitoring, a loud 85 dB alarm, and a working temperature range of -10°C to +50°C.
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Kidde Smart KN-COP-DP-10YL-AQ-WF
US
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£65.12 ≈ | 10 | — | — | ✓ | — | 85 |
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This plug-in smart carbon monoxide alarm combines electrochemical CO detection with indoor air quality monitoring for TVOCs, temperature, and humidity. It includes Wi-Fi notifications through the Kidde app, voice alerts, a digital display, and a 10-year lithium battery backup, making it suitable for homeowners who want connected protection with minimal maintenance. ★ Ideal forIt suits someone seeking a reliable smart smoke detector because it provides electrochemical CO detection, an 85 dB alarm, 24/7 Wi-Fi notifications, voice alerts, and a 10-year battery backup.
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Google Nest Nest Protect Smoke and Carbon Monoxide Alarm
US
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£295.16 ≈ | — | — | — | ✓ | 40°F to 100°F | 85 |
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Google Nest Protect is a smart smoke and carbon monoxide alarm with split-spectrum smoke sensing, spoken warnings, smartphone alerts, self-testing, wireless interconnect, and a nightlight. It suits households wanting connected safety monitoring, especially homes without hardwired alarms. ★ Ideal forIt suits buyers seeking a reliable smart smoke detector because it combines split-spectrum smoke sensing, a 10-year electrochemical carbon monoxide sensor, 2.4 GHz Wi-Fi alerts, self-testing, wireless interconnect, and an 85 dB alarm.
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Heiman S1-M Smart Smoke Detector
US
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£29.51 ≈ | 5 | — | — | ✗ | 40°F to 100°F | 85 |
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The Heiman S1-M is a photoelectric smart smoke detector using dual-wavelength red and infrared sensing, Matter over Thread connectivity, and a 5-year CR123A lithium battery. It suits US and Canadian homes using Apple Home, Google Home, Amazon Alexa, SmartThings, or Home Assistant with a Thread border router. ★ Ideal forIt suits buyers seeking a reliable smart smoke detector because it has UL 217 certification, dual-wavelength photoelectric sensing, a 5-year battery, local Matter over Thread connectivity, and an 85 dB alarm.
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First Alert First Alert SC5 Smart Smoke & Carbon Monoxide Alarm (SC5 Hardwire)
US
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£95.19 ≈ | — | — | — | ✓ | — | 85 |
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This is a hardwired 2-in-1 smart smoke and carbon monoxide alarm that sends alerts to your phone and supports voice alerts with Heads-Up warning. It also provides battery backup and can interconnect with compatible alarms to help create a whole-home alert system. It's a fit if you already use or plan to use the First Alert/Google Nest Protect smart home ecosystem and want remote status, testing, and notifications. ★ Ideal forIf you want the most reliable smart smoke detector, the SC5 Hardwire's Precision Detection Technology and dual sensing (electrochemical and photoelectric) plus hardwired power with battery backup directly target reliable smoke/CO detection and continuous protection.
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