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Table of Contents
Introduction..................................................................................................................................................... 1
Clock Operation..............................................................................................................................................1
About this Manual ..........................................................................................................................................2
Optional Accessories ......................................................................................................................................3
Configuring the DDC Series Wall Clock........................................................................................................ 4
Setting the DIP Switches - DDC2 / DDC4 Series....................................................................................... 5
DDC2......................................................................................................................................................5
DDC4......................................................................................................................................................5
DIP Switch Settings ................................................................................................................................ 6
Configuring RS485 Communications - DDC2/4-RS Series ........................................................................... 7
DDC2-RS....................................................................................................................................................7
DDC4-RS....................................................................................................................................................7
Battery Usage - DDC2 / DDC4 Series............................................................................................................7
DDC2/4-RS / DDC2/4-RS-24.....................................................................................................................7
Battery Installation - DDC2 / DDC4 Series.................................................................................................... 8
DDC2.......................................................................................................................................................... 8
DDC4.......................................................................................................................................................... 8
Power Cord Installation - DDC2/4-RS ........................................................................................................... 8
DDC2-RS....................................................................................................................................................8
DDC4-RS....................................................................................................................................................9
Wiring Installation - DDC2/4-RS Series.........................................................................................................9
Secondary Wiring ....................................................................................................................................... 9
RS485 Wiring ............................................................................................................................................. 9
DDC-TC Wiring ......................................................................................................................................... 9
Replacing an Existing DDC4 Wall Clock................................................................................................. 10
Board Layout Diagram ............................................................................................................................. 10
Mounting - DDC2 / DDC4 Series................................................................................................................. 11
Mounting to a Wall ...................................................................................................................................11
DDC2.................................................................................................................................................... 11
DDC4.................................................................................................................................................... 12
Mounting to a Single Gang Box ............................................................................................................... 12
DDC2.................................................................................................................................................... 13
DDC4.................................................................................................................................................... 13
Double Mount - Wall.................................................................................................................................... 14
DDC2 (Double Mount - Wall).............................................................................................................. 15
DDC4 (Double Mount - Wall).................................................................................................................. 16
Double Mount - Ceiling............................................................................................................................ 16
Double Mount - Ceiling............................................................................................................................ 17