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SEU (Main Sensor Unit)
A. CO2 Sensor
B. LCD display
C. Power (Green LED)
D. AL1 (Red 1 LED)
E. AL2 (Red 2 LED)
F. AL3 (Red 3 LED)
G. Fault (Yellow LED)
H. Mode Button
I. UP Button
J. Down Button
K. Enter Button
L. Buzzer
M. Reset Button
N. 4-20mA Out
O. Battery
P. DC Power Supply
Q. RDU Cable (RJ45)
R. Relay 3 (AL3)
S. Relay 2 (AL2)
T. Relay 1 (AL1)
U. Strobe Cable (RJ45)
V. Panel Holder
RDU (Remote Display Unit)
A. Power (Green LED)
B. AL1 (Red 1 LED)
C. AL2 (Red 2 LED)
D. AL3 (Red 3 LED)
E. Fault (Yellow LED)
F. LCD display
G. Mode Button
H. UP Button
I. Down Button
J. Enter Button
K. Buzzer
L. Strobe Cable (RJ45)
M. Output Cable to RDU
(RJ45)
N. Input Cable from
SEU/RDU (RJ45)
O. Panel Holder
