Designed primarily for use with the micro-focuser supplied with the Meade LX200GPS telescopes, the AC516 will also function with other motorised focusers as well. The unit features tactile feedback control buttons, solid-state electronics, and precise IC regulated speed control. A special feature is the electronic “auto-brake” - when the user lifts his finger off either position button the micro-processor instantly freezes the motor to prevent unpredictable run-on. Ideal for remote operation set-ups and any situation were precise intuitive control of the focuser is demanded. Includes 1.7m (extended) coiled extension cable (additional cable available). Operates on 9V PP3 battery not included. Please note that this product does not include a motorised telescope focuser.