Woods makes 13660 outdoor photoelectric timer.
Intermatic makes same timer HB61RC
See image of timer with manual, instructions and link to seller:
http://waterheatertimer.org/Woods-timers-and-manuals.html#13660Add a comment and say what type of problem you are having with timer.
General instructions are:
Plug timer into receptacle.
Push on-off button to set timer.
5
possible
settings:
F always OFF
O Always ON
Choose1-9 for ON at dusk and OFF 1-9 hours later as set
Choose D for ON at dusk, OFF at Dawn
Choose 1.-9. for ON right now, OFF 1-9 hours later as set