Applies To

TN111 and TN311 Plug-In Timers

Question / Problem

How do I program a TN111 or TN311 Plug-In Timer?

Common Installation / Application Conditions

• The timer is used to control a lamp or other plug-in load.

Step-by-Step Resolution

1. Install the ON and OFF Trippers

   Insert the trippers into the desired ON and OFF time slots around the timer dial. Use green trippers for ON events and red trippers for OFF events. Press each tripper fully into its slot.

2. Rotate the Dial One Full Turn

   Turn the timer dial clockwise one complete revolution to ensure the trippers are properly seated and the timer mechanism is ready to follow the schedule.

3. Set the Current Time

   Continue rotating the dial clockwise until the current time of day aligns with the arrow or time indicator on the face of the timer.

4. Plug the Timer Into the Wall Outlet

   Insert the timer into a standard 125-volt wall outlet.

5. Plug the Load Into the Timer

   Plug the lamp or device into the timer’s receptacle. Make sure the device’s own power switch is set to the ON position.

Tips / Additional Notes

• Replacement trippers can be ordered on intermatic.com. They are part number 107TN221 (red OFF tripper) and 107TN222 (green ON tripper).
• The manual override switch is located on the top of the timer and can be used to turn the load ON or OFF at any time without affecting the schedule.