1
SEU (Main Sensor Unit)
A. O2 Sensor
B. LCD display
C. Power Green LED
D. Alarm 1 Red LED
E. Alarm 2 Red LED
F. Alarm 3 Red LED
G. Fault Yellow LED
H. MODE Button
I. UP Button
J. DOWN Button
K. ENTER Button
L. Alarm Buzzer
M. Reset Button
N. 4-20mA Output
O. Battery Backup Input
P. DC Power Supply
Q. RDU Cable (RJ45)
R. Relay 3 for AL3
S. Relay 2 for AL2
T. Relay 1 for AL1
U. Strobe Cable (RJ45)
V. Mount/Panel Holder
RDU (Remote Display Unit)
A. Power Green LED
B. Alarm 1 Red LED
C. Alarm 2 Red LED
D. Alarm 3 Red LED
E. Fault Yellow LED
F. LCD display
G. MODE Button
H. UP Button
I. DOWN Button
J. ENTER Button
K. Alarm Buzzer
L. Strobe Cable (RJ45)
M. Output to RDU
(RJ45)
N. Input Cable from SEU/RDU
(RJ45)
O. Panel Holder
