Nice UST1-FU Instructions D'installation Et D'utilisation page 21

Jumpers and U-bolts necessary for control unit
operation with components not connected
Jumpers: U-bolts:
X2-J10 X8-Pin 5-6
X4-J15 X9-Pin 1-2
X5-J31 8.2kΩ-Pin 1-2
X6-J33 Opto-Pin 2-3
Additional electronic limit switch X7- J26, J27, J28
ATTENTION: It is recommended to also install module K5
(optional) on the main board for adjustment. See the K5
module instructions for more details.
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