Scantronic External Siren Cover with Backlight Support | Polycarbonate Lid | Blue, Red & Orange Options

FAQs

What is the difference between the PLUS covers and standard SDR-CV covers?

The SDR-CV-BL-PLUS, SDR-CV-RD-PLUS and SDR-CV-OR-PLUS covers feature integrated backlight support, specifically engineered with light transmission properties that enable effective illumination from the backlight assembly in the SDR-W-EXT-NC-PLUS wired sounder. Standard SDR-CV covers (without PLUS designation) do not include backlight support and are designed for sounders without backlight functionality. The PLUS covers are only compatible with the SDR-W-EXT-NC-PLUS model, while standard covers work with other SDR series sounders. If upgrading to backlight capability, both the sounder unit and the appropriate PLUS cover are required.

Can I use these PLUS covers on non-backlight Scantronic sounders?

No, the SDR-CV-BL-PLUS, SDR-CV-RD-PLUS and SDR-CV-OR-PLUS covers are specifically designed for use with the SDR-W-EXT-NC-PLUS wired external sounder which includes backlight-ready electronics. These covers will not provide backlight functionality when installed on standard SDR sounders that lack the internal backlight assembly and associated electronics. Additionally, the physical design and mounting characteristics may differ between PLUS and standard variants. Installers should verify sounder model compatibility before ordering replacement covers to ensure proper fit, functionality and maintenance of system compliance ratings.

How does the backlight feature enhance security system effectiveness?

The backlight capability provides enhanced visual deterrent effect by creating highly visible illumination that draws attention to the security system’s presence during both daytime and nighttime conditions. The backlit sounder creates a stronger visual indication than standard strobes alone, particularly during darkness when the backlight creates an illuminated halo effect around the entire cover. This enhanced visibility serves as a powerful psychological deterrent to potential intruders while providing reassurance to property occupants that the security system is active and operational. The backlight feature is particularly effective in low-light conditions, during evening hours, or in locations where maximum visual deterrent impact is desired.

Are the PLUS covers available in custom colours or with branding?

While the standard colour options are blue (SDR-CV-BL-PLUS), red (SDR-CV-RD-PLUS) and orange (SDR-CV-OR-PLUS), Scantronic offers customized screen-printed covers that can be ordered separately. Custom printed covers can include company branding, logos, or specialized markings, with no additional charge provided the minimum order quantity of 40 units is reached. This customization capability allows security companies, property developers, or large-scale installations to add corporate identity or specialized messaging while maintaining the backlight functionality and technical performance of the PLUS cover series. Custom orders should be arranged through Scantronic sales channels with sufficient lead time for production.

What is the expected lifespan of the PLUS covers in outdoor environments?

The SDR-CV-BL-PLUS, SDR-CV-RD-PLUS and SDR-CV-OR-PLUS covers are manufactured from impact-resistant polycarbonate with UV-resistant properties designed for prolonged outdoor exposure. While specific lifespan depends on environmental conditions, typical installations can expect many years of reliable service when properly installed with appropriate sealing and weatherproofing. Factors affecting cover longevity include UV exposure intensity, temperature extremes, coastal salt spray, industrial pollutants, and physical impact. The covers maintain their IP55 environmental protection rating throughout their service life. Regular inspection during annual alarm system maintenance helps identify any degradation, ensuring covers continue providing effective protection and backlight functionality. Replacement covers enable economical refresh of appearance and performance without replacing entire sounder assemblies.

Does the backlight feature consume significant additional power?

The backlight functionality integrated into the SDR-W-EXT-NC-PLUS sounder is designed for efficient operation within the sounder’s overall power budget. The specific power consumption depends on whether the sounder is operating in Self Contained Bell (SCB) mode drawing power from its integral rechargeable lithium ion battery, or Self Actuated Bell (SAB) mode powered from the control panel. The SDR-W-EXT-NC-PLUS specifications indicate 35mA quiescent current with maximum 300mA consumption, which accounts for all sounder functions including backlight capability. The backlight feature is engineered to provide enhanced visibility without significantly impacting the sounder’s typical battery life (rechargeable battery) or the control panel’s power supply requirements when operating in SAB mode.