Clear status indication. PakSense Alert Indicators warn users if specific temperature range has been breached. Users simply push the corner of the label to activate and apply to product or product packaging. In the event of a temperature excursion, bright Light Emitting Diodes (LEDs) will flash, providing clear product status information. PakSense Temp Indicator Labels are digital, provide higher accuracy, and provide clearer results than chemical indicators. Alert indicators are available via customer orders.