USB switch

... to remotely connect/disconnect USB devices from the computer

Distance sensor

... Infrared distance sensor, perfect for checking if the mount is properly parked or not

Proximity (non contact) sensor/switch

... very convenient to asses the position of the roof

Mechanical limit sensor/switch

... another option to control the position of the roof

Tilt sensor

... to confirm your telescope is horizontal before closing the roof

Controlled 4 plug module

... 4 plug module for easier setup 

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