Deta Combined Optical Smoke & Heat Alarm 240V with 10 Year Sealed Lithium Battery Backup | 1171

Mains Powered Multi Sensor Smoke & Heat Alarm with 10 Year Sealed Battery Backup

Protect your home with the Deta 1171 Combined Optical Smoke & Heat Alarm, an intelligent multi sensor fire alarm that combines optical smoke detection with heat sensing for enhanced fire detection and reduced false alarms. Designed for modern residential installations, it provides reliable protection in hallways, landings, living rooms, bedrooms and loft spaces, making it a versatile solution for whole-home fire safety.

Powered by a 240V mains supply with a 10-year sealed lithium battery backup, the Deta 1171 continues to operate during power outages while eliminating the need for routine battery replacements. Featuring wireless controller compatibility, interlinking capabilities and a two-part installation design, it offers quick installation and long-term reliability for electricians, developers and homeowners alike.

Available now from Alert Electrical your trusted supplier of fire detection and safety products since 1996

Features

• Combined Optical Smoke & Heat Detection
• 240V Mains Powered
• 10 Year Sealed Lithium Battery Backup
• Suitable for High Dust Environments
• Ideal for Hallways, Landings, Bedrooms & Living Rooms
• Interlink Up to 12 Compatible Deta Alarms
• Compatible with Deta Wireless Alarm Controller (1190)
• Two-Part Installation Design
• Universal Mounting Base Included
• Fly Lead Connection for Fast Installation
• Test & Silence Button
• 85dB Alarm Output
• High Visibility Dust Cover Included
• 5 Year Manufacturer Guarantee

Multi Sensor Protection

The Deta 1171 combines optical smoke detection with heat sensing to provide faster and more accurate fire detection while helping reduce nuisance alarms.

Ideal for:

• Hallways
• Landings
• Living rooms
• Bedrooms
• Loft spaces
• Circulation areas
• High dust environments

10 Year Sealed Battery Backup

The integrated sealed lithium battery provides backup power for up to 10 years, ensuring continuous protection during mains power failures.

Benefits include:

• No annual battery changes
• Reduced maintenance
• Low battery warning
• Long-term reliability

Interlink Multiple Alarms

The Deta 1171 can be interlinked with up to 12 compatible Deta alarms, including:

• Optical Smoke Alarms
• Heat Alarms
• Combined Smoke & Heat Alarms
• Carbon Monoxide Alarms

When one alarm activates, every connected alarm sounds, providing early warning throughout the property.

Compatible with Wireless Alarm Controller

The alarm works with the Deta Wireless Alarm Controller (1190), allowing:

• Remote testing
• Remote silencing
• Easy access to alarms installed in lofts or difficult-to-reach locations

Perfect for modern homes and multi-storey properties.

Designed for Faster Installation

The innovative two-part assembly allows electricians to install the mounting base during second fix, with the alarm head fitted after decorating has been completed.

Additional installer-friendly features include:

• Universal mounting base
• Large wiring space
• Tool-free push-fit alarm head
• Fly lead connection
• Foam gasket to reduce dust ingress
• Protective dust cover supplied

• Brand: Deta
• Product Code: 1171
• Product Type: Combined Optical Smoke & Heat Alarm
• Detection Technology: Optical Smoke & Heat Multi Sensor
• Power Supply: 240V AC Mains
• Battery Backup: 10 Year Sealed Lithium Battery
• Alarm Sound Output: 85dB at 1 Metre
• Maximum Power Consumption: 9W
• Test & Silence Button: Yes
• LED Status Indicators: Yes
• Low Battery Warning: Yes
• Interlink Capability: Up to 12 Compatible Deta Alarms
• Compatible with Wireless Alarm Controller: Deta 1190
• Installation: Two-Part Assembly
• Mounting Base: Universal Easy-Fix Base Included
• Connection Type: Fly Lead
• Dust Protection: High Visibility Protective Dust Cover Included
• Wiring Space: Large Capacity Mounting Base
• Foam Dust Gasket: Yes
• Suitable Locations: Hallways, Landings, Bedrooms, Living Rooms, Loft Spaces & Circulation Areas
• Warranty: 5 Years

Ideal Applications

• Domestic Properties
• New Build Homes
• Property Renovations
• Hallways
• Landings
• Bedrooms
• Living Rooms
• Loft Spaces
• Rental Properties
• HMOs

Why Buy the Deta 1171?

The Deta 1171 Combined Optical Smoke & Heat Alarm offers intelligent multi sensor fire detection with the reliability of a 240V mains supply and the reassurance of a 10-year sealed battery backup. Its installer-friendly design, remote testing compatibility and interlink functionality make it an excellent choice for modern residential fire safety systems.