1 to 5 second timer
Example
BuySignal Diff crosses above 0 (wait until time) then 1 else 0;

Hello, your request is not possible in current thinkscript. TOS does not have a bar count-down timer, cannot process time functions less than 1 minute, and cannot display time based functions on a chart-time-frame that i not divisible by the closing bar (30 min event on a 1 hour chart time frame). Many time functions will not work on non-time based bars in TOS, such as tick and range bars.

There are several threads on this forum about this topic with examples.