Figure 20 - Otu Lithium Battery On / Off Switch (S2); Figure 21 - Otu 2/4 Wire Select Switch (S4); Figure 22 - Otu 600 Ω High Impedance Switch (S6) - Siemens TC12 Installation, Commissioning And Maintenance Handbook

Figure 20 - OTU Lithium Battery On / Off Switch (S2)

2 - WIRE
OPERATION

Figure 21 - OTU 2/4 WIRE SELECT SWITCH (S4)

Information on
the silk screen
Figure 22 - OTU 600 Ω High Impedance Switch (S6)
666/HE/43100/000
TC12 Installation, Commissioning & Maintenance Handbook
BATTERY
ON
BAT
Information on the silk screen
1
2W
S4
Information on Silk Screen
HI-Z
HIGH IMPEDANCE
LINE TERMINATION
Page 67
ON
S2
BATTERY
OFF
4W
A
4 - WIRE
OPERATION
TERMINATION
600
S6
OFF
600 OHM
LINE
Issue 10