What's a Shot Clock?

This tournament has a shot clock, meaning players have 30 seconds to act on their hand. Here's some more information on that:

Every player has 30 seconds to act on their hand. If not acted within that time, the action is ruled as a check (if there's no action in front of the player) or a fold (if there's a bet in front of the player).
Every player receives 2 time breaker chips per day. If a player needs more time, he or she can toss a time breaker chip in and receive one minute of additional time to ponder.
Time breaker chips can not be accumulated or saved. If a player hasn't used their chips at the end of the day they are confiscated.
The dealer counts the first ten seconds in his or her head before he or she presses a button on the timer on the table. The timer will then count down from 20 to 0.
The dealer will announce the last 10 seconds for each player out loud to remind players they're on the clock.