There's a good possibility you'll need a device that can monitor items in a refrigerator at a restaurant or in a grocery store. The large-capacity lithium batteries used in UbiBot devices are specifically created to enable better connectivity and higher performance throughout extended idle periods. The devices can even be included with RS485 interfaces for a variety of external probes, and they also integrate nicely with external antennae for secure WiFi connections. For more deep information click here - https://www.ubibot.com/news/5115/monitor-products-at-a-supermarket-or-restaurant-fridge-through-the-usage-of-ubibot-products/