What is the difference between a WiFi scent system and a GPRS scent system?
A WiFi scent system can be connected to a suitable WiFi network. A GPRS scent system does not. This system has a built-in modem with SIM card and thus connects to a 2G network. However, you pay some extra cost for this for your data usage. So if you have a suitable WiFi network at your disposal, a WiFi scent system is the best choice.