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Connecting to Alarm Sensors and External Devices
S
E
N
S
O
R
1
S
E
N
S
O
R
2
S
E
N
S
O
R
3
S
E
N
S
O
R
4
G
N
D
G
N
D
ALARM IN
R/O RX
TX
1 2 3 4 - + - +
RA
RC
GG
Function Name Regular Capacity
Alarm In
Relay Out
Alarm 1/2/3/4/G
RA/RC
-TTL Level(5VDC)
-Initial Contact Resistance, Max. : 75m§
-Max. Switching Power : 60W, 62.5VA
-Max. Switching Voltage : 220VDC/125VAC
-Max. Carrying Current : 2A
-Contact Rating(Resistive) : 2A 30VDC/0.5A 125VAC
Alarm sensors and external devices are usable by connecting to ALARM IN and R/O terminals of the reverse
side of the SNS-110 respectively.
Caution
When connecting an external device to R/O terminal, you are recommended to use
additional “Relay” for the purpose of the protection of each device.