The TC-80N3 Timer Remote Control is a remote switch with different timer control and exposure count control functions. The TC's advantage is that it's more than just a timer. It has three timers (and one counter) in it, each which can be set independently or in combination. Each timer can be set from 1 second to 99 hours 59 minutes 59 seconds with second precision. It is very useful for time-lapse photography of blooming flowers, astrophotography, etc.