The worm gear drive technology and cast aluminum housing of the 4M Series protects the clock mechanism from natures harshest elements such as wind shear, snow and ice.

4MR

The 4MR employs an innovative transmission and reversible motor that will advance the hands 10 times speed for correction. A Master Clock Controller will provide automatic time corrections for daylight saving and power outages. The 4MR is also compatible with 970 Series manual controls.

4MDR

The 4MDR is a double face version of the 4MR. A single mechanism drives back-to-back clock dials with spacing between 15” and 24” with appropriate shaft selection.

4MI

The 4MI minute impulse advances incrementally each minute utilizing a single direction motor. An MC3-MI Master Clock Controller is required for operation and provides automatic correction. The 4MI will not drift when employed in countries that do not regulate power line frequency or installations that may have generator backup power. An MC3-MI Master Clock with the 4 circuit expansion switches allows user to remotely adjust up to 4 clocks independently during installation or repair.