The Honeywell Home R200S-1 is a stand-alone optical smoke alarm with a sealed 10-year lithium battery — designed to deliver a decade of reliable fire detection with zero maintenance. Its optical (photoelectric) sensor is highly effective at detecting slow-burning, smouldering fires, the type most likely to develop undetected in living rooms, bedrooms, and hallways during the night. The ultra-slim body, large front-face test/silence button, and automatic self-testing electronics make the R200S-1 a practical choice for homeowners, social housing, and landlords looking for a low-complexity, high-reliability smoke alarm that meets the 2022 UK fire alarm legislation for homes.
10
Year sealed battery & warranty
Optical
Photoelectric sensor
10 min
Hush silence duration
ℹ Legislation Compliance: The R200S-1 meets the 2022 UK fire alarm legislation for homes in England, Scotland, and Wales. It is BSI Kitemarked to EN 14604:2005 and CE and UKCA marked.
⚠ Not Suitable for Kitchens or Garages: Optical smoke alarms should not be installed in areas with regular cooking fumes, steam, or vehicle exhaust. For kitchens, utility rooms, and garages, use the Honeywell Home R200H-N1 heat alarm instead, which detects dangerous temperature rises rather than airborne particles.
Key Features
Optical (Photoelectric) Smoke Sensor
The R200S-1 uses an optical photoelectric sensor that detects changes in light scattering caused by smoke particles. This technology is particularly sensitive to slow-smouldering fires — the type that produce large quantities of smoke before flames develop — making it well-suited to living rooms, bedrooms, and hallways where this fire type is most prevalent.
10-Year Sealed Lithium Battery
A tamper-proof, sealed-for-life lithium battery powers the alarm for its entire 10-year service life without any battery replacement. The low-power chip maximises battery efficiency in standby mode. An end-of-life signal clearly alerts you when the full unit needs replacing, preventing any gap in protection.
Automatic Self-Testing Electronics
The R200S-1 automatically tests its sensor and electronics on a periodic basis to identify any fault conditions without requiring manual intervention. If a fault is detected, a clearly distinguishable audible fault tone sounds to alert the occupant, and fault tones can be silenced for up to 9 hours while the issue is investigated.
85 dB Sounder & 10-Minute Hush
The 85 dB high-output sounder ensures the alarm can be heard clearly throughout a typical home. In the event of a nuisance activation — for example, from toast smoke drifting from a nearby kitchen — the entire front face of the alarm functions as a button to silence the sounder for up to 10 minutes, giving time for the air to clear without disabling the alarm entirely.
Ultra-Slim & Easy to Install
The ultra-thin, compact body minimises visual impact on ceilings and walls, making it one of the most discreet battery smoke alarms available. Installation uses a simple bayonet bracket system that attaches to ceiling or wall with minimal tools. The stand-alone design means no wiring or interconnection is needed for a basic installation.
10-Year Manufacturer Warranty
Honeywell (Resideo) back the R200S-1 with a full 10-year manufacturer warranty, matching the designed service life of the unit. The alarm is BSI Kitemarked to EN 14604:2005+AC:2008, CE and UKCA marked, and meets the requirements of the 2022 UK fire alarm legislation for homes, making it suitable for both owner-occupied and rental properties.
Technical Specifications
| Model |
R200S-1 |
| Alarm Type |
Stand-Alone Optical Smoke Alarm |
| Sensor Technology |
Optical (photoelectric) smoke sensor |
| Power Source |
Sealed 10-year lithium battery (non-replaceable) |
| Alarm Sound Level |
85 dB minimum |
| Interconnect |
Stand-alone (no interlink) |
| Hush Duration |
Up to 10 minutes |
| Fault Silence Duration |
Up to 9 hours |
| Self-Test |
Automatic periodic self-test (sensor & electronics) |
| Warranty |
10 years (manufacturer) |
| Certifications / Standards |
CE, UKCA, BSI Kitemark, EN 14604:2005+AC:2008 |
| Legislation Compliance |
2022 England, Scotland & Wales fire alarm home legislation |
| Mounting |
Ceiling or wall mount; bayonet bracket |
| Colour |
White |
Frequently Asked Questions
What is the difference between an optical and an ionisation smoke alarm?
Optical (photoelectric) alarms use an infrared light beam and detect smoke when particles scatter the beam — they are most effective at detecting slow-smouldering, low-heat fires that produce large smoke particles (e.g. burning upholstery or electrical faults). Ionisation alarms use a small radioactive source and respond faster to fast-flaming fires with smaller particles. For living areas and bedrooms, optical alarms are generally preferred as they are less prone to nuisance alarms from cooking fumes.
Where should I install the R200S-1 in my home?
Install at least one smoke alarm on every floor of the home, ideally in the hallway and landing to protect escape routes. Additional alarms in living rooms and bedrooms provide enhanced protection. Mount on the ceiling, as close to the centre of the room as practical, at least 30 cm from any wall or light fitting. Do not install in kitchens or garages — use the R200H-N1 heat alarm there instead.
Can the R200S-1 be interconnected with other alarms?
No — the R200S-1 is a stand-alone alarm without an interlink module. If you need wireless interconnection between multiple alarms so that they all sound together when one triggers, choose the R200S-N1, which features the same optical sensor and sealed battery but adds a built-in RF radio interlink module compatible with the full Honeywell Home R200 series.
What does the hush function do, and is it safe to use?
The hush (silence) function mutes the sounder for up to 10 minutes without disabling the alarm's detection capability. It is intended for use when the alarm has been triggered by a non-hazardous source (e.g. toast smoke or steam drifting from another room). The alarm continues monitoring throughout the hush period and will immediately re-activate if smoke levels remain high or increase. It is not a substitute for identifying and eliminating the cause of the activation.
