GS77 Operation Types
Operation Types are as follows:
Manual Operation
The Shutter contains a sprung barrel assembly which counterbalances the shutter wight whilst opening and closing. Standard locking system is a bottom rail mounted centre lock, which when operated deploys two security rods into a pre-drilled hole in the side guide section. Optional guide mounted locks are also available as an extra security addition or in direct replacement for the standard centre lock system.
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Electric Operation
Powered by a 1PH integral tubular motor drive the shutter is powered open and close by a choice of control switch.
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