Duevi DIRFE, Инструкция по эксплуатации

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9. PULSE COUNT
By factory settings, the sensor is programmed to give alarm at first intrusion detection (AND of both upper and lower IR
heads, “pulse count” = 1).
To increase the immunity to false alarms in harsh environment, it is possible to set the “pulse count” to 2 (
DIP5 = ON ): in
this way the sensor will give alarm at the second intrusion detection (each detection is the AND of both upper and lower IR
heads).