Setting this to a higher value will reduce the performance in the sensors page, in instances with many sensors the page may not load if "all sensors" has been selected
This will be corrected in 7.6.2 with CB-37809 to allow pagination but ignore it for csv export
If you utilize cbapi to export the sensors, please upgrade to 1.7.6 to take advantage of the pagination. No adjustments needed to your script as cbapi will do the pagination. All Products: How to Update CbAPI