Apollo Discovery Black Base Sounder Visual Indicator – White Flash

Addressable Sounder with Integrated Visual Warning for Advanced Fire Detection Systems

The Apollo Discovery Black Base Sounder Visual Indicator (White Flash) is a high-specification addressable device designed for use in modern fire alarm systems. Offering both sound and visual notification in a single compact unit, it combines powerful performance with advanced configurability. Designed for use with the Apollo Discovery and XP95 protocols, this unit provides reliable alerting in a wide range of commercial, industrial, and public environments where enhanced evacuation signalling is critical. Finished in black for discrete or architecturally sympathetic installations, the sounder features a white flashing visual indicator, making it particularly suitable for locations where visual alerts are required but where a red flash may not be appropriate, such as in clinical or modern commercial interiors.

Engineered for Seamless System Integration

The Discovery Base Sounder Visual Indicator is loop-powered and connects directly to an XPERT 8 or XPERT 7 base for quick and simple installation. To access the built-in short circuit isolator (SCI) functionality, it must be installed using the SA5000-20X XPERT 8 Base (sold separately). It can be used either in conjunction with an addressable Apollo detector or as a stand-alone device when fitted with a base cap (available in black, white or red).

Its compatibility with Discovery and CoreProtocol® digital communication ensures full integration with Apollo’s addressable system architecture. Group, global and individual control modes are supported, and all tone, volume and flash settings can be configured and managed directly through the fire control panel.

Visual and Audible Alerting in One Unit

This unit offers dual signalling—combining a powerful audible tone with a white flash visual indicator, which is effective in both light and dim environments. The sounder and visual indicator operate independently, meaning tailored control strategies can be implemented for staged evacuations or pre-alarm conditions. Whether used in healthcare, hospitality, offices, or educational environments, this flexibility allows engineers to match device behaviour to local safety requirements.

Configurable Sound Output and Tone Selection

The Apollo Discovery Base Sounder Visual Indicator includes 15 tone pairs, giving installers the flexibility to select the most appropriate alert tone during commissioning. This supports adherence to local safety regulations or industry preferences. Each tone pair includes a primary evacuation tone and a secondary alert tone to signal a possible or pending evacuation. To suit the acoustics of the environment, the unit features seven adjustable volume levels, with a maximum output of approximately 95 dB(A) at 1 metre. This ensures that the sounder is effective in both quiet and noisy spaces, such as meeting rooms or plant areas.

Location-Specific Volume Programming

One of the standout features of this unit is its support for local volume configuration. During commissioning, the control panel can be set to a configuration mode that allows the engineer to walk the site, adjusting each device’s volume on the spot using a magnetic wand. This speeds up the installation process and ensures that each sounder is optimally set for its specific location. Once adjusted, the settings are stored centrally via the control panel.

Compliance and Build Quality

The device is compliant with the EMC Directive 2014/30/EU and the Construction Products Regulation (EU) 305/2011, ensuring reliable performance under regulatory frameworks for safety and electromagnetic compatibility. A copy of the Declaration of Conformity is available from the Apollo Fire Detectors website. The black housing and white flash option offer additional flexibility for environments where aesthetics or specific signalling standards are important. The unit is constructed from high-quality, fire-resistant materials for long-lasting performance in demanding conditions.

Summary of Key Features:

• Addressable base sounder with white flashing visual indicator
• Black body for architectural or discrete applications
• Compatible with Apollo Discovery and XP95 protocols
• Supports XPERT 8/7 bases, including integrated isolator with SA5000-20X
• 15 tone pairs with selectable evacuation and alert tones
• Adjustable to seven volume levels, up to 95 dB(A)
• Independent control of sounder and visual indicator
• Easy installation and commissioning with on-site magnetic setup
• Fully compliant with EMC Directive and CPR requirements
• Ideal for commercial, healthcare, and public sector installations

The Apollo Discovery Black Base Sounder Visual Indicator (White Flash) is a versatile and robust solution for sites requiring dual notification and high configurability. Suitable for new installations or system upgrades, this device ensures effective, targeted alerting while simplifying installation and control. For enhanced safety and flexibility in modern fire alarm design, it’s a trusted choice among fire safety professionals