The C-TEC ActiV Non-Diode Base (Part No. C4408) is a high-quality detector mounting base designed for use with the complete range of C-TEC ActiV conventional fire detectors. Engineered for reliability, ease of installation, and long-term performance, this detector base provides a secure mounting platform for optical smoke, heat, and multisensor detectors used in conventional fire alarm systems. It is an ideal solution for commercial, industrial, educational, healthcare, hospitality, and residential fire detection installations.

Specifically designed for fire alarm systems where head-out monitoring is not required, the C4408 does not include a Schottky diode, making it suitable for many non-UK installations and conventional systems that do not require detector removal monitoring. It provides a simple, cost-effective solution while maintaining dependable electrical connectivity between the detector and the fire alarm control panel.

The C4408 is fully compatible with the entire range of C-TEC ActiV conventional fire detectors, including optical smoke detectors, heat detectors, and multisensor detectors. Its simple click-and-twist locking mechanism allows detectors to be installed, removed, or replaced quickly without disturbing the wiring, reducing installation time and simplifying routine maintenance.

Designed with installers in mind, the base provides ample internal wiring space, making cable termination quick and straightforward. The clearly marked terminals accept up to 2.5mm² fire-rated cable, ensuring secure electrical connections and neat cable management for professional installations. The base uses 2-wire monitored, polarity-sensitive wiring, making it suitable for conventional fire alarm circuits.

A key advantage of the C4408 is its 360-degree detector visibility. When paired with ActiV detectors featuring dual LED indicator strips, the detector’s alarm indication remains visible from any direction, allowing maintenance engineers and emergency responders to quickly identify activated devices regardless of their viewing angle. This improves maintenance efficiency and speeds up fault identification during emergency situations.

The base also includes an integrated detector locking mechanism, helping prevent unauthorized detector removal once installed. A built-in head removal tool and identification tag further simplify servicing and maintenance, making the device particularly suitable for commercial and public buildings where system integrity is essential.

For installations requiring remote visual indication, the C4408 provides dedicated remote LED terminals, allowing connection to an optional BF318 Remote Indicator. This enables installers to provide remote alarm indication where detectors are installed in concealed spaces such as ceiling voids, plant rooms, lift shafts, or locked equipment rooms.

Manufactured from durable white UL94 V-2 rated polycarbonate, the base is designed to provide years of reliable service in demanding indoor environments. Bright tin-plated steel terminals with nickel-plated steel screws offer excellent corrosion resistance and dependable long-term electrical performance. Measuring 102.2mm in diameter and 20.5mm deep, and weighing just 55g, the base maintains a compact, low-profile appearance suitable for modern building interiors.

The C4408 is third-party certified to the relevant parts of EN54 by Intertek when used with compatible ActiV detectors, ensuring compliance with internationally recognised fire detection standards. This certification provides confidence that the detector base meets the stringent quality and performance requirements expected in professional life-safety systems.

Ideal for offices, schools, hospitals, hotels, shopping centres, warehouses, factories, apartment buildings, government facilities, and residential developments, the C-TEC ActiV Non-Diode Base (C4408) combines reliable performance, quick installation, and maintenance-friendly design into a single professional-grade solution. Its compatibility with the full ActiV detector range, durable construction, and straightforward installation make it an excellent choice for new fire alarm installations, system upgrades, and replacement projects.

Key Features

Compatible with the full range of C-TEC ActiV conventional fire detectors
Non-diode design for systems that do not require head-out monitoring
Simple click-and-twist detector installation and removal
Spacious terminal layout for quick and easy wiring
Supports 2-wire monitored, polarity-sensitive conventional fire alarm circuits
Remote LED terminals for optional BF318 Remote Indicator
360° detector LED visibility when used with ActiV detectors
Integrated detector locking mechanism, removal tool, and identification tag
Durable UL94 V-2 polycarbonate construction
Accepts up to 2.5mm² fire-rated cable
Compact dimensions: 102.2mm diameter × 20.5mm depth
EN54 certified (when used with compatible ActiV detectors)
Suitable for commercial, industrial, healthcare, educational, hospitality, and residential fire alarm installations.