... LED timer relay 2) Thumb switch setting 3) Power fail memory timer 4) Timing range ... series Timer Relay has timing function with 3 digit LED display, and thumb swtich for setting timing value ... range is from 0.1S to 99.9H;3) With software menu for setting different function, ... selection (hour, minute, second), output mode selection (3 modes), output maintain time setting, key lock function, etc ...