Cable Connection

Connection to SKFF Keyboard

Wire Color	SKFF Terminal
● Brown	S1
● White	S2
● Green	GND

Screw terminal block (directly on SKFF keyboard PCB)

Screw terminal block (directly on SKFF keyboard PCB)

Connection to Digital Clock

Note

Following chapters are applicable only for generation 4 digital clock.

Stopwatch keyboards are connected to the TEMP terminal block, with the exception of the outdoor digital clock, where keyboards are connected to the CTRL terminal block.

Indoor Models

Caution

Simultaneous use of temperature sensors and wired stopwatch control is not possible.

Wire Color	TEMP Terminal
● Brown	TEMP1
● White	TEMP2
● Green	−

TEMP standard plug-in terminal block

TEMP standard plug-in terminal block

TEMP plug-in terminal block

TEMP plug-in terminal block

TEMP screw terminal block (directly on digital clock PCB)

TEMP screw terminal block (directly on digital clock PCB)

Outdoor Models

Wire Color	CTRL Terminal
● Brown	S1
● White	S2
● Green	−

CTRL screw terminal block (directly on digital clock PCB)

CTRL screw terminal block (directly on digital clock PCB)