With the introduction of smartphone apps like Triggertrap and ioShutter, which allow you to control your DSLR from your phone, you might wonder why anyone would still buy a dedicated remote unit ...
Delay / self-timer (delay): just like the self-timer on your camera. With the TM timer remote switch, you can set any delay (in 1 second increments) up to 99 hours, 59 minutes and 59 seconds.