Connection possibility for s 88 (60881) and s 88 cc (60882) as well as for the old feedback modules s 88 (6088 and 60880) to Central Station II and Central Station 3, resp. at terminal 60125/60145. An old connection socket is available for the 6088 and 60880 feedback modules, as well as two RJ 45 sockets for the new 60881 and 60882 feedback modules. The decoder also has 16 contactor inputs like 60881. These 16 inputs can be specially configured for TCOs to create an array of up to 64 keys. Operation requires the use of a power supply ref. 66360 or 66201