Clock Speaker Units - Digital
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Clock System Master
Clocks & Other Accessories Clock
Speaker Units
Clock Speaker Units - Digital
National Time offers a
digital clock with speaker combination enclosure to house an 8" speaker and D/ DX/DU225 series
digital clocks. This new microprocessor based secondary clock and the MC-100 Master Clock form a
unique time keeping system offering on demand time correction. This digital communication format
can power and instantly correct all secondary clocks to any time of day using only two conductor
low voltage wire. This format eliminates expensive 120v/ 24v power feeds as well as costly battery
replacement. Popular synchronous clock reset formats (hour and 12 hour) are also supported to
facilitate 'drop-in' replacements and retrofits. 24VAC, and 120VAC units are available in
attractive 2.25" high visibility, wide-bar digits. The durable steel housing incorporates a
universal mounting plate which securely mounts the 8" speaker (not included) and utilizes the same
holes as standard speaker bezels with holes on 11", 10", or 8" centers. The clock/ speaker
semi-flush housing completely encloses the digital clock and mounts proud of the backbox to
facilitate the use of standard speaker boxes for 24V clock applications. For 120VAC clock
installations, the backbox must accommodate the D2T-120/24 transformer. See data sheet figures.
Powder gray finish with black speaker grill standard. The removable speaker grill could also
accommodate custom fabrics. Other colors upon request.
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