Explanation of the operation of Autotrol 440 Timer
Note: The 440 and 440i timers have been OBSOLETE - Unavailable since 2012.
The replacement is the 460TC day timer with 12 volt AC transformer.
https://www.softenerparts.com/ap460tc.htm
For more information on 440 timer repair visit our website at : https://www.softenerparts.com/440_440i_timer_repair
