AN-305 is a monitor independently developed by Weichuan Technology based on the LoRaWAN standard communication protocol, which integrates infrared and door magnets. The product is an intelligent door magnet that remotely monitors door and window switches and human activities. When doors and windows are opened or someone illegally enters, it will automatically notify the user through message or phone The optional infrared sensor of the product has the characteristics of high detection accuracy, stable performance, small size, and low power consumption. Widely applicable for door and window monitoring in scenarios such as homes, communication rooms, workshop production lines, large logistics warehouses, archives, museums, etc.