NVC210
User’s Guide
Rev.1.2 (Aug. 2009)
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6. Tips for using NVC210
6.1. ALARM-IN and ALARM-OUT
ALARM connectors are used to connect various sensing and alerting devices. Examples of sensing
devices are infrared sensors, motion sensors, heat/smoke sensors, magnetic sensor, etc. ALARM-
OUT is used for connecting alerting device such as loud speaker, flashing light, etc.
Figure 6-1. Terminal block for I/O connection
1. ALARM-IN
Connect the two wires of the sensors to “SNS IN”. The sensor type can be set in
Administrative mode(Ref. 5.7). Output lines providing on-off switching are connected
between “+“ and “-” pins.
Figure 6-2 shows the input circuit of “SNS IN”.
