The WS1 Pro - WIFI and SIM version offers two different types of network connections: WiFi and mobile GPRS/3G/4G. When WiFi is not available, a mobile GPRS/3G/4G network offers an internet connection. It transfers data to the IoT cloud platform, enabling remote access to both historical and real-time data using the UbiBot App or Web Console platform. This enables you to monitor the environment from any location and receive real-time alerts. To buy this sensor click - https://store.ubibot.com/collections/all/products/ws1-pro-sim-version