To set the timer function on your Series 3 desk
1. Press the “T” button to set the period of time to inform users to stand up. Each press of the “T” button leads to a 0.5 hour increment (The maximal setting of time is 2 hours).
2. After setting a period of time, the display will flash for a couple of seonds and it will then auomatically return to show the height of the desk. The indicator light on the top right of the panel will then be on.
3. The unit will then emit 5 beeps to remind the users when the set time is up.
4. To cancel the timer, repeatedly press the “T” button until the display shows the current height and the indicator light will be turned off.
See the full instructions here
Or watch the video: