How long will Cycloop work in Alarm mode?

Depends on how much battery was left before the Alarm started working, but with a fully charged battery you can expect up to 1500 locations at 5 min intervals or several days of continuous tracking.  Keep in mind the tracker only sends locations constantly when it is detecting movement.  If no movement is detected for 30 min. then Cycloop sends one last location of it's position before returning to Armed mode and is prepared to alarm again once new movement is detected.