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Product at a glance

Carbon Monoxide (CO) is a dangerous gas. It is colourless, odourless, and undetectable by human senses. Unlike Carbon Dioxide (CO2), CO can accumulate silently indoors due to malfunctioning fuel-burning appliances, fireplaces, or sudden environmental changes. Its exposure can lead to serious health complications and even death. Hence, detecting it early is critical for safety. The SES 311 Carbon Monoxide Alarm is designed to protect you and your loved ones by providing a reliable, early warning against unsafe CO levels. Equipped with advanced sensing technology, it quickly detects carbon monoxide produced by the incomplete combustion of fuels such as gas, oil wood, or coal. When danger is detected or the device requires attention, it alerts you instantly with a loud buzzer and bright LED indicators. The SES 311 is compact, lightweight, and easy to install. It operates on a sealed 10-year long-lasting battery, ensuring continuous protection without the need for replacements. Whether placed near fuel-burning appliances or fireplaces, this detector offers peace of mind and dependable safety, day and night.

Application

  • Detects carbon monoxide to prevent health hazards and poisoning.
  • Can be integrated into ventilation and smart home systems for continuous air quality monitoring.
  • Suited for new-build or retrofit installation projects

Benefits

  • Compact and lightweight design makes installation effortless.
  • With no wiring required, setting it up is fast and clean.
  • A 10-year sealed battery keeps it running reliably for years, eliminating the hassle of replacement.
  • Tamper-proof protection prevents unauthorised interference.
  • 7-year no-quibbles warranty provides reliable protection and peace of mind.

Features

  • Loud buzzer alarm, clearly audible up to three meters
  • Easy wall-mount design for convenient installation
  • EN 50291-1:2018 compliant
  • Enhanced CO sensing for a faster response to rising CO levels
  • Dual LED indicators to easily distinguish between alarm and fault
  • End-of-life alert
  • ‘Test / Mute’ button for simple device checks and control
  • Clear LED indication to show the sensor is live and working

Specifications

Electrical
Alarm volume >85 dB at 3 meters
Supply CR17450AH 3.0V non-replaceable battery
Purpose of control CO alarm
Action type Press test button for routine testing
CO sensor time Electrochemical sensor
RF range 2.402GHz – 2.480GHz
Mechanical
Dimensions (W x H x D) 110 mm (W) X 110 mm (L) X 45 mm (H)
Weight 160 gms (approx)
Case material Polycarbonate – FR grade
Mounting Wall mounting
Environmental
Operating temperature range -10°C to 40°C
Environmental humidity range 30% – 90% relative humidity (RH)
Atmospheric pressure 980 hPA to 1035 hPa
Compliance
Product standard EN 50291-1:2018
UKCA approved Yes