Which brands offer the most reliable and efficient fire alarm systems?
This page compares 10 brands with verified specifications and prices. Top options include Kidde 30CUAR-V, Model 21032781, Kidde 30CUA10, Model 21031544, Kidde 30CUAR, Model 21031529. Prices range from £39 to £141. All data is sourced from manufacturer documentation and specialist retailers.
| Product ⇅ | Price ⇅ | Number of Zones ⇅ | Sensor Count ⇅ | Wireless/Wired ⇅ | Battery Life (hours) ⇅ | Alarm Sound Level (dB) ⇅ | Connectivity ⇅ |
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Kidde 30CUAR-V, Model 21032781
US
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£51.89 ≈ | — | 2 | — | 6 months | 85 dB | Hardwired interconnectable with up to 24 devices |
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This hardwired combination alarm detects both smoke and carbon monoxide using photoelectric and electrochemical sensors. It includes voice alerts, AA battery backup, self-testing, and interconnection capability, making it suitable for homes and facilities that need coordinated, reliable fire and CO protection. ★ Ideal forKidde suits buyers seeking reliable and efficient fire alarm systems because this model combines two detection sensors, 85 dB alerts, voice warnings, self-testing, and hardwired interconnection with up to 24 devices.
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Kidde 30CUA10, Model 21031544
US
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£51.89 ≈ | — | — | — | 10 years | — | Hardwired interconnect |
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This hardwired combination alarm detects both smoke and carbon monoxide and includes a 10-year backup battery that does not require routine replacement. It suits homeowners seeking interconnected protection with reduced nuisance alarms and simple installation. ★ Ideal forKidde suits buyers seeking reliable and efficient fire alarm systems because this model combines photoelectric and electrochemical sensing, 10-year backup power, and hardwired interconnection so linked alarms sound together.
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Kidde 30CUAR, Model 21031529
US
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£44.47 ≈ | — | 2 | — | 6 months | 85 dB at 10 ft | Hardwired interconnectable with up to 24 devices |
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The Kidde 30CUAR is a hardwired combination smoke and carbon monoxide alarm with two AA backup batteries. It uses photoelectric and electrochemical sensors, provides 85 dB alerts, and connects to up to 24 compatible Kidde devices, making it suitable for homes and commercial facilities needing interconnected protection. ★ Ideal forThis model suits buyers seeking a reliable and efficient fire alarm system because it combines two detection technologies, 85 dB alerting, six-month battery replacement, and hardwired interconnectivity for up to 24 devices.
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Kidde 30CUA10-V, Model 21032783
US
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£55.60 ≈ | — | — | — | 10 years | — | Hardwired interconnect |
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This hardwired combination alarm detects both smoke and carbon monoxide and includes a 10-year backup battery. Voice alerts identify the danger, making it suitable for homeowners seeking long-term, interconnected fire and CO protection. ★ Ideal forKidde suits buyers seeking reliable and efficient fire alarm systems because this model combines smoke and carbon monoxide detection, a 10-year backup battery, voice alerts, self-testing, and hardwired interconnection.
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Kidde 30CUAR-VRF, Model 21033919
US
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£59.30 ≈ | — | 2 | — | 6 months | 85 dB | Wired and wire-free interconnect, up to 12 compatible alarms |
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This combination alarm provides photoelectric smoke and electrochemical carbon monoxide detection, voice alerts, and 85 dB warning sound. It suits residential homes, especially renovations, because it uses hardwired power with AA battery backup and can connect compatible alarms wirelessly. ★ Ideal forKidde suits buyers seeking reliable and efficient fire alarm systems because this model combines two hazard sensors, self-testing, enhanced smoke detection, voice alerts, and wired or wire-free interconnection for up to 12 compatible alarms.
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First Alert SC5 Battery Smart Smoke and Carbon Monoxide Alarm, FSMCO600NVCL1
US
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£96.37 ≈ | — | 2 | — | — | 85 dB at 10 ft | Wi-Fi |
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The SC5 is a battery-powered smart alarm that detects both smoke and carbon monoxide using photoelectric and electrochemical sensors. It provides voice alerts, mobile notifications, low-battery warnings, and wireless interconnectivity, making it suitable for homes replacing Nest Protect or adding connected fire safety. ★ Ideal forThis model suits buyers seeking a reliable and efficient fire alarm system because it combines two detection technologies, 85 dB alarms, Precision Detection, wireless interconnectivity, and app-based alerts in one battery-powered unit.
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Notifier FCO-951 Multi-Criteria Fire and Carbon Monoxide Detector
US
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£140.90 ≈ | — | 4 | — | — | — | FlashScan SLC addressable |
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The Notifier FCO-951 is a wired, addressable detector combining smoke, carbon monoxide, heat, and infrared sensing in one device. Its multi-criteria detection and 10-year CO sensing cell suit commercial buildings that need advanced fire detection and integrated life-safety CO monitoring. ★ Ideal forIt suits buyers seeking reliable and efficient fire alarm systems because it uses four sensing technologies, occupies one FlashScan SLC address, provides automatic drift compensation, and includes a 10-year CO sensing cell.
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Siemens OP921 Smoke Detector, S54320-F4-A2
US
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£38.93 ≈ | — | 1 | — | — | — | Addressable signaling line circuit |
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The Siemens OP921 is a wired, addressable photoelectric smoke detector with optical light-scattering detection, microprocessor-based processing, continuous diagnostics, and built-in circuit isolation. It suits commercial buildings using compatible Siemens Cerberus PRO, FireFinder XLS, or related fire alarm systems. ★ Ideal forThis model suits buyers seeking reliable and efficient fire alarm systems because its optical sensing, continuous diagnostics, built-in isolation, and addressable two-wire connectivity support accurate detection and dependable system communication.
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Edwards SIGA-HRD Intelligent Heat Detector
US
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£44.49 ≈ | — | — | — | — | — | Signature Series SLC |
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The Edwards SIGA-HRD is an intelligent addressable heat detector combining fixed-temperature detection at 135°F with rate-of-rise detection at 15°F per minute. It suits commercial fire alarm systems using Edwards Signature Series control panels and supports electronic addressing, automatic device mapping, self-diagnostics, and multiple detector bases. ★ Ideal forIt suits buyers seeking reliable and efficient fire alarm systems because it provides dual heat detection, continuous self-diagnostics, electronic addressing, automatic device mapping, and connectivity to Signature Series loops supporting up to 250 devices.
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Hochiki ALO-V Analog Photoelectric Smoke Sensor
US
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£59.36 ≈ | — | — | — | — | — | Analog addressable fire alarm panels |
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The ALO-V is a wired, UL 268 7th edition-listed photoelectric smoke sensor with multi-spectrum smoke categorization technology. It is designed for commercial, industrial, open-area, and HVAC duct applications where reliable early detection and reduced nuisance alarms are important. ★ Ideal forThis product suits buyers seeking reliable and efficient fire alarm systems because its UL 268 7th edition listing, optical particulate identification, multi-spectrum detection, and compatibility with addressable panels support dependable early fire detection.
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