
ENGLISH
Units with dark-on mode (normally open)
The receiver receives no transmitter light
→
LED is on, output
switched: object pre-sent (certain range).
The receiver receives very little transmitter light
→
LED flashes (1 Hz),
output switched: object present (uncertain range).
The receiver receives the transmitter light
→
LED off, output not
switched: no object detected.
Maintenance
Keep the lens of the sensor free from soiling. For cleaning do not use
any solvents or cleaning agents which could damage the plastic lens-
es.
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