The Kidde K10LLCO is a sleek, lightweight carbon monoxide alarm engineered for a full decade of worry-free protection. With a sealed-in lithium battery that lasts the entire 10-year life of the alarm, you never need to change a battery — ever. Continuous monitoring of carbon monoxide levels keeps your home, family, and guests protected around the clock, while the unique Kidde CO Electrochemical Sensor delivers accurate, reliable detection.

Slim and versatile, the K10LLCO can be wall or ceiling mounted using the included fixings, or used freestanding on a table or shelf. Its compact, portable design also makes it ideal to take on holiday. BSI certified to EN50291-1:2018 standards and CE tested, this is a trusted, safety-assured alarm backed by a full 10-year warranty.

Key Features

• 10-Year Sealed Lithium Battery — The battery lasts the full lifetime of the alarm — no replacements ever needed

• Continuous CO Monitoring — Around-the-clock detection of carbon monoxide for complete peace of mind

• Alarm Memory Function — Red LED flashes every 60 seconds to indicate a previous CO event has occurred

• Unique Kidde Electrochemical Sensor — Water-based CO electrochemical sensor for accurate, reliable detection

• 3-LED Indicator System — Separate LEDs for Alarm, Operate, and Fault status at a glance

• End-of-Life Alert — Audible alert warns you when the alarm's 10-year protection period is complete and replacement is needed

• Test/Reset Button — Allows regular testing of alarm function for ongoing peace of mind

• Versatile Installation — Mount on wall or ceiling, or use freestanding on any flat surface

• Portable — Compact and lightweight enough to take on holiday or to a holiday let

• BSI Certified — Tested and certified to EN50291-1:2018 standards

• CE Tested & Certified — Meets all relevant European safety requirements

• 10-Year Warranty — Fully backed for the complete duration of its operating life

Specifications

• Brand: Kidde

• Model: K10LLCO

• Battery: Sealed Lithium (non-replaceable, 10-year life)

• Sensor: Kidde CO Electrochemical Sensor

• Operating Temperature: 0°C to 40°C

• Humidity Range: Up to 90% RH (non-condensing)

• Storage & Transport: −20°C to +60°C / 5–95% RH (non-condensing)

• Dimensions: H 4.0 × W 11.6 × D 7.2 cm

• Weight: 140g

• Certification: BSI EN50291-1:2018, CE

• Warranty: 10 Years

What's In The Box

• 1 × Kidde K10LLCO Carbon Monoxide Alarm

• Wall Fixing Kit & Screws