IMO iSmart V4 - Page 248

Chapter 9 Expansion Module 217
Installation
※ All the expansion modules installation method is the same as shown below.
Input
4
×AC
Y3
Output 4 x Relay / 8A
SG2-8ER-A
Y2
Y1
Y4
L
Run
AC 100~240V
N
X3
X1 X2
X4