The National Time 2M / 2MR series clock mechanisms are economical yet employ worm/ worm gear drive technology similar to its bigger cousins providing smooth and continuous advancement of the hands. The standard mechanism is driven by a permanent magnet, 115V 50Hz or 60Hz synchronous gear motor. These mechanisms offer mounting options to suit all applications with dial sizes to 42" diameter. Custom shaft lengths can be provided to meet specific project requirements. Either can be set manually by turning the minute hand without damaging the unit. Access to the hands is required to set the time on the 2M series mechanism while the 2MR series incorporates dual motors and the ability to be reset remotely with multiple reset options.