DETAILS

• For use with various LiftMaster® Speed Jack Commercial Door Operators
• Also known as: 26-438 AB117-00121 G26438 438USA
• The DIP switches are used to set the time delay period between 1 and 1024 seconds.
• The timer has an internal 1 second delay opening of the DIP switches adds their corresponding value to that internal delay.
• The switches to the right are all opened for a total delay of 1023 seconds adding that to the internal 1 second provides the full 1024 seconds.
• Any time delay from 1 to 1024 seconds can be achieved by opening the appropriate switches.