Tonghui TH2827 Series - Page 130

TH2827 Series Operation Manual Chapter 7 Command Reference
124
Figure 7 the output circuit for control signal
The input circuit for control signal is shown in the figure 8 below.
PULL-UP
RESISTOR
/EXT.TRG
/KEYLOCK
820
JP5 JP4
+5V
EXT.DCV2
Figure 8 the input circuit for control signal
PULL-UP
RESISTO
R
JP5
JP4
+5V
EXT.DCV2
/ALARM
/INDEX
/EOM
COM2
JP6
TH2827 Common