You have a DIN panel mount SPDT (single pole double throw) timer.
This is input ON delay timer that receives input that causes timer to start a delay countdown, or signal off delay timer that receives input that causes timer to turn on for specified countdown, or a cycle timer that repeats same program pattern over and over in a set amount of time like every 5 hours and 12seconds, or an ordinary interval timer.
Manual says: Field-selectable time ranges from 0.001 second to 9999 hours.
My impression is that this means timer can be set for durations ranging from .001 seconds to 9999 using the 1-4 keys
Manual says: Change the timing range with the increment keys (1 to 4).
Use keys 1-4 to change data when setting timer when in the set mode.
It looks like you set seconds or milliseconds with #1 key
Manual shows contact information
Measuring and Supervisory Controls Department
Shiokoji Horikawa, Shimogyo-ku
Kyoto, 600-8530 Japan
Tel: (81)75-344-7108/Fax: (81)75-344-7189
OMRON CANADA, INC.
One East Commerce Drive
885 Milner Avenue
60173 Scarborough, Ontario M1B 5V8