System Sensor DH400 Installation And Maintenance Instructions Manual page 6

UL LISTED
COMPATIBLE 2-WIRE
CONTROL PANEL
(+)
ALARM
INITIATION
LOOP
(–)
1ST DETECTOR
IN LOOP DH400
SUPERVISORY
SWITCH
2 1
(+) IN (+) OUT
(+)
3
(+)
RA400Z (OPTIONAL)
REMOTE ALARM LED
5 mA MAX
(–)
4
(–)
2.8 VDC NOM.
IN ALARM
5
(–) IN (–) OUT
STYLE D OPTIONAL WIRING
LAST DETECTOR
IN LOOP DH400
EOL RESISTOR
SUPERVISORY
SPECIFIED BY
SWITCH
PANEL MANUFACTURER
2 1
(+) IN (+) OUT
(+)
3
(+)
RA400Z (OPTIONAL)
REMOTE ALARM LED
5 mA MAX
(–)
4
(–)
2.8 VDC NOM.
IN ALARM
5
(–) IN (–) OUT
E
O
L
R