Scantronic SDR-2R-EXT-NC | Wireless External Sounder Backplate | No Cover, Grade 2

FAQs

What is Scantronic Secure Radio (SSR) and how does it differ from standard wireless?

Scantronic Secure Radio (SSR) is an advanced bidirectional wireless communication system that provides cybersecure connectivity between the SDR-2R-EXT-NC sounder and compatible Scantronic control panels. Unlike conventional one-way wireless systems, SSR enables two-way communication allowing over-the-air firmware updates, rapid event notification, and continuous monitoring of device status. The system employs AES128 encryption to protect against interception, spoofing, and unauthorized access. SSR actively detects jamming attempts and alerts the control panel to potential interference, ensuring reliable operation even in challenging RF environments. This sophisticated technology delivers enhanced security and convenience compared to legacy wireless systems while maintaining excellent battery life.

How long do the batteries last and what type are required?

The SDR-2R-EXT-NC uses four CR123A Lithium 3Vdc batteries, providing three years of typical battery life when operating in SSR mode with Scantronic control panels, or two years when operating in legacy 868MHz mode. Battery status is continuously monitored wirelessly by the control panel, which alerts users when replacement is needed. The long battery life combined with wireless status monitoring ensures reliable operation with minimal maintenance requirements. CR123A batteries are widely available industrial-grade lithium cells that provide excellent performance across the sounder’s wide operating temperature range of -25°C to +60°C.

What is the maximum installation distance from the control panel?

The SDR-2R-EXT-NC offers a radio range of up to 700 metres in open field conditions, providing exceptional flexibility for positioning the external sounder. In real-world installations, the effective range depends on building construction, wall materials, and potential sources of RF interference. The substantial 700-metre specification ensures reliable communication in most residential and commercial installations, including large properties, multi-building sites, or locations where the control panel and external sounder must be separated by significant distances. During installation, signal strength should be verified to ensure reliable communication, particularly in challenging environments with thick walls or metal construction materials.

Can the SDR-2R-EXT-NC be used with non-Scantronic control panels?

The SDR-2R-EXT-NC is specifically designed to work with all Scantronic control panels, SSR systems, and legacy 868MHz Scantronic wireless systems. The sounder’s sophisticated SSR technology and bidirectional communication protocol are proprietary to Scantronic systems, requiring compatible control panel electronics and firmware. Unlike the SDR-W-EXT-NC-PLUS wired variant which can work with third-party panels, the wireless SDR-2R-EXT-NC requires a Scantronic control panel to function correctly. This ensures the advanced features such as over-the-air updates, jamming detection, and wireless battery monitoring operate as designed.

Does the wireless sounder require any programming or configuration?

Yes, the SDR-2R-EXT-NC must be enrolled or paired with the Scantronic control panel during installation, following the procedures documented in the control panel’s installation manual. This registration process establishes the encrypted wireless communication link between the sounder and panel. Engineers can configure settings such as cut-off timer duration (5 seconds, 3 minutes, or 15 minutes), siren tone selection, and other operational parameters through the control panel interface. The bidirectional communication capability means certain settings can be adjusted remotely without physical access to the sounder, and over-the-air updates enable firmware improvements without removing the device from its mounting location.

How does the jamming detection feature work?

The SDR-2R-EXT-NC’s jamming detection capability continuously monitors the 868.0-868.6MHz frequency band for signs of intentional interference or signal jamming attempts. The AES128 encrypted SSR system can distinguish between normal RF interference from legitimate sources and deliberate jamming attempts designed to disrupt wireless communication. When jamming is detected, the sounder alerts the control panel, which can trigger appropriate responses such as activating tamper alarms, notifying monitoring stations, or triggering alternative signalling paths. This sophisticated anti-jamming protection ensures the wireless sounder maintains security system integrity even when subjected to electronic attack attempts that might compromise conventional wireless devices.

Can I change the lens colour after installation?

Yes, the SDR-2R-EXT-NC uses the common enclosure design shared across the Scantronic SDR range, allowing lens colour changes through replacement covers or lens upgrade packs. The standard configuration includes a blue lens (SDR-CV-BL cover with white body). Orange and red lens options are available through upgrade packs (SDR-LENS-OR for orange, SDR-LENS-RD for red), with each pack containing 20 lenses for bulk installations. Changing the lens colour enables aesthetic coordination with property requirements, regional preferences, or specific security equipment standards. The lens replacement process is straightforward for qualified security engineers, maintaining the sounder’s IP55 environmental protection and Grade 2 compliance when correctly installed.