http://www.timingall.com/gym-clock/ China Gym Clock suppliers A synchronized timer is more important now than ever before due to the recent surge in remote meetings and training. If you are in a giant commercial gym and looking to operate several timers聽simultaneously, then this one works well for you. Only have to select one timer聽as the master and then the remaining timers will be set as slaves as default. And when聽Sync time mode is not necessary, you can still use the timer individually.聽 And default聽 IR remote control is only available to control the master timer, salve timers can only get the signal from the master timer. Thre