Scope MMD1 | Wireless LED Moving Message Display | POCSAG Receiver, Bi-Colour

FAQs

What is the maximum message length the MMD1 can display?

The MMD1 supports messages up to 120 characters in length, including spaces and all standard characters. The display can queue up to five messages simultaneously, with a total display memory of 768 bytes available for message storage. Messages scroll horizontally across the 80 x 16 pixel display to accommodate longer text.

What is the wireless range of the built-in POCSAG receiver?

The MMD1 features a range of up to 1 mile (approximately 1.6 kilometres), though actual performance will vary depending on the surrounding environment, building construction, antenna placement and transmitter equipment used. The high-sensitivity receiver operates at -117dBm for 1% error rate, ensuring reliable reception throughout most on-site paging networks.

What colours can the display show and can they be mixed?

The MMD1 uses bi-colour LED technology capable of displaying red, green, amber and mixed colour combinations. The display allows different colours to be used within the same message or to differentiate between message priorities, providing flexible visual options for various applications and alert types.

How is the display installed and powered?

Installation is straightforward – the display mounts to walls or ceilings using the supplied angle brackets which attach to M4 threaded bushes at either end of the unit. The display requires connection to 230V AC mains power via the included 2 metre power lead. The supplied SMA right-angle antenna connects to the receiver input. The unit comes pre-programmed as standard, requiring no configuration for typical applications.

What applications is the MMD1 suitable for?

The MMD1 is designed for a wide range of on-site communication applications including campus emergency mass alerts, fire alarm notifications, lockdown alert systems, nurse call displays, catering announcements, security notifications and general information sharing. Any application requiring clear, visible messaging within a Scope paging network can benefit from the display’s bright, scrolling LED presentation.

Does the display comply with UK and EU regulations?

Yes, the MMD1 complies with the Radio Equipment Directive 2014/53/EU and ROHS Directive (EU) 2015/863. Applied standards include EN 300 220-1 (Radio), EN 301 489-1 (EMC) and EN 62368-1:2020 (Safety). The display carries CE and UKCA markings confirming conformity with essential requirements for safety, electromagnetic compatibility and radio performance.

What frequency range does the receiver operate on?

The built-in POCSAG receiver operates across the 430-470MHz frequency range with channel spacing of either 12.5kHz or 25kHz. The receiver supports RF baud rates of 512 or 1200 bits per second, providing compatibility with standard Scope paging transmitters and on-site paging infrastructure operating within this frequency band.

Can multiple displays be used on the same system?

Yes, multiple MMD1 displays can operate within the same Scope paging network. Each display receives messages transmitted by compatible Scope paging transmitters within range. This allows information to be broadcast simultaneously to multiple locations throughout a facility, ensuring comprehensive coverage for emergency alerts, announcements and information sharing across large or multi-building sites.