["The LA66 USB LoRaWAN Adapter is designed to quickly turn USB devices into LoRaWAN radios. It combines a CP2101 USB TTL chip and the LA66 LoRaWAN module, which can easily add the LoRaWAN wireless function to a PC/mobile phone or an embedded device with a USB interface. LA66 is a ready-to-use module that includes the LoRaWAN v1.0.3 protocol. The LoRaWAN stack used in the LA66 is used in more than 1 million LoRaWAN devices worldwide. This mature LoRaWAN stack reduces the risk of developing stable LoRaWAN sensors that support different LoRaWAN servers and different country standards. External MCUs can invoke the LA66 via AT command and start data transmission via the LoRaWAN protocol. Each LA66 module contains a globally unique OTAA key for LoRaWAN registration. In addition to supporting the LoRaWAN protocol, LA66 also supports the open source peer-to-peer LoRa protocol for non-LoRaWAN applications. LA66 is equipped with a TCXO crystal, which ensures that the module can provide stable performance even in extreme temperatures", "LoRaWAN USB adapter based on the LoRaWAN module LA66", "Ultra-long RF range", "Supports LoRaWAN v1.0.3 protocol", "Supports peer-to-peer protocol", "TCXO quartz to ensure RF performance at low temperatures", "Spring RF antenna", "Worldwide unique OTAA keys", "AT command via UART TTL interface", "Firmware upgrade possible via UART interface", "Open source mobile app for LoRaWAN signal detection and GPS tracking", "CPU: 32-bit 48MHz", "Flash: 256KB", "RAM: 64KB", "Input Power Range: 5v", "Frequency Range: 150MHz ~ 960MHz", "Maximum Power +22 dBm constant RF output", "High sensitivity: -148 dBm", "Temperature : Storage : -55 ~ +125?", "Operating: -40 ~ +85?", "Humidity : Storage : 5 ~ 95% (Non-Condensing)", "Operating: 10 ~ 95% (Non-Condensing)", "LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm", "LoRa Rx current: <9 mA", "1 x LA66 USB Adapter"]