C-TEC C4403A1R ActiV Rate of Rise Heat Detector & Diode Base

The C-TEC C4403A1R ActiV Rate of Rise Heat Detector & Diode Base is a reliable A1R-class thermal detector designed to activate when it senses a rapid increase in temperature or reaches a static threshold between 54°C and 65°C.

Ideal for areas where smoke detectors may cause false alarms, this unit offers dependable fire detection at a highly competitive price.

Manufactured in the UK by C-TEC and third-party certified to EN54-5 by Intertek, the C4403A1R features a broad operating voltage range of 6–33V DC, making it suitable for a wide variety of conventional fire alarm systems.

Its low-profile design incorporates two ultra-bright 8mm x 2mm red LED strips, providing 360° alarm indication for clear visibility from any angle.

• A1R heat detection – Activates on rapid temperature rise or when static temperatures reach between 54°C and 65°C

• Reliable performance – High-quality UK-manufactured detector delivering excellent detection at a competitive price

• Certified to EN54-5 – Independently tested and approved by Intertek for compliance with European fire detection standards

• Flexible voltage range – Operates from 6V to 33V DC for compatibility with a wide range of conventional systems

• 360° LED indication – Dual 8mm x 2mm ultra-bright red LEDs ensure clear visual status from all angles