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13 (104)
Revision 4
Figure 4: Electrical connections on the main board
①
Mode selector key
⑥
Solid-state relay terminal
②
AUTOSETUP key
⑦
RS-485 bus
③
RS-485 terminator switch
⑧
Analog mA output
④
Navigation keys
⑨
Ground connection
⑤
24 V DC power supply terminal
⑩
Micro-B USB port
8
3
2
5
1
4
7
6
9
10