HTC - PRODUCT COMPARISON TABLE

Manufacturer Model

Recommended Replacement

Switchmaster

Switchmaster 300

X

X

X

X

X

C

425 Coronet or    CentaurPlus C11    ChannelPlus H11

Switchmaster 320

X

X

X

X

X

X

C

425 Diadem/Tiara    CentaurPlus C21    ChannelPlus H21

Switchmaster 350

X

X

X

X

X

X

C

Switchmaster 400

X

X

X

X

X

X

C

Switchmaster 600

X

X

X

X

X

X

C

Switchmaster 805

X

X

X

X

X

X

C

Switchmaster 900

X

X

X

X

X

X

C

Switchmaster 9000

X

X

X

X

X

X

C

CentaurPlus C21    ChannelPlus H21

Switchmaster 9001

X

X

X

X

X

X

C

Switchmaster 905

X

X

X

X

X

X

C

425 Diadem/Tiara    CentaurPlus C21    ChannelPlus H21

Switchmaster 980

X

X

X

X

X

C

425 Coronet    CentaurPlus C11    ChannelPlus H11

Switchmaster Sonata

X

X

X

X

X

C

CentaurPlus C27    ChannelPlus H27

A =

Direct plug-in replacement

B =

Direct plug-in replacement with simple wiring changes

C =

Replace backplate and Re-wire required

D =

Replace backplate but terminal connections the same

Please note: In ALL cases where a 24 hour model is stated as the recommended replacement its 7 day equivalent can be used and fitted in the same way.

NOTE: For the sake of clarity CentaurPlus models C21 and C27 have been shown
as recommended replacement models. However, where these are shown replacing
a common time base programmer, CentaurPlus models C121 and C127 could also
be used.