4
Features ......................................................................... 5
Controls ……..................................................................... 6
Part List …………………………………………………………………………………... 10
Installation ..................................................................... 11
Wall Mounting ............................……................................ 14
Switch Settings ..................….…....................................... 16
Programming ..…....................…....................................... 17
Headset Installation and Operation………............................... 22
Operation ………………………………………………………………………………... 24
Care and Maintenance ……………………………………………………..……. 32
Service ……………………………………………………………………………………. 33
Warranty .……………………………………………………………………………….. 34
Summary of Contents for Plus SP400
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