Busch-Jaeger 6550 Mode D'emploi page 33

Fields of Application
Extensions
The following can be used as extensions:
– Normally-open contact button, e.g. 2020US
(Switching/dimming possible via extension unit button.
If a Busch watchdog attachment is used with the
6550U-10x, only switching is possible)
– Flush-mounted (FM) Insert 6805U in conjunction with
Busch Watchdog
®
180° Sensors (s. page 54)
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