Chain spreader for installation with 1" operator shaft and 1-1/4" door shaft
Designed to keep tension on the chain when used with a wall mount commercial operator. It helps avoid premature wear on the door shaft bearing and commercial operator output shaft bearing
Was previously MWRTA02A now has a new board making installation easier
Includes single channel receiver (MWR12A) and transmitter (MWTA12) with audible low battery alarm.
This feature that activates when the battery has only 25% of its life remaining indicating the battery should be replaced. The alarm sounds for 5 to 10 seconds at 1 to 2 minute intervals.
The receiver operates on either 12 or 24 volt AC/DC and provides N.O. or N.C. output.