Description M5Stack LoRa Unit with Antenna E220 is a compact 920MHz LoRa communication module for serial wireless data links, point-to-point transmission, broadcast communication, and long-range IoT nodes. The M5-U170 unit uses the E220-900T22S module for the 920.6~928.0MHz band and connects to M5Stack controllers through Grove serial communication. The M5Stack LoRa Unit E220 supports Wake on Radio, carrier monitoring, communication key features, and four operating modes selected through onboard DIP switches. As a LoRa serial communication unit, it is suitable for home security alarms, building automation, smart home devices, industrial sensor nodes, and remote telemetry where wired communication is difficult. With a communication distance up to 5km, low-power LoRa operation, and a bundled antenna, the M5Stack LoRa Unit with Antenna E220 helps developers build reliable long range IoT module prototypes without designing RF hardware from scratch. The M5-U170 module is especially useful when a compact controller needs a Grove-connected 920MHz LoRa communication module. Features 920MHz LoRa communication module: supports the 920.6~928.0MHz band with E220-900T22S hardware. LoRa serial communication unit: uses serial port communication for flexible integration with M5Stack controllers and embedded hosts. Long-range wireless link: communication distance can reach up to 5km under suitable conditions. Advanced LoRa functions: Wake on Radio, carrier monitoring, communication key, point-to-point transmission, and broadcast transmission. Onboard DIP switches: four operating modes can be selected for data transmission and reception workflows. Low power design: a new-generation LoRa solution balances longer distance, faster speed, and lower power consumption. Ready for IoT projects: compact unit format with antenna and Grove cable makes the M5Stack LoRa Unit E220 easy to deploy. Specifications SKU M5-U170 Product M5Stack LoRa Unit with Antenna E220 LoRa Module E220-900T22S (JP) @ Telec 001-P01730 Supported Band 920MHz, 920.6~928.0MHz Maximum Transmitting Power 13dBm, about 20mW Communication Distance Up to 5km Service Voltage DC 3.3V to 5.5V; keep supply voltage at 5V or below Communication Mode Serial port communication Operating Modes Transmission, WOR transmission, WOR reception, sleep Product Size 71.4 x 24 x 8mm Package Size 136 x 92 x 13mm Product Weight 19.5g Package Weight 25.1g Applications Long range IoT module projects for remote sensor readings and low-power telemetry. Home security alarms, wireless alarm systems, and building automation nodes. Smart home devices that need a LoRa serial communication unit instead of Wi-Fi-only connectivity. Industrial sensor networks, monitoring stations, and point-to-point control links. Automotive and field equipment projects where a compact 920MHz LoRa communication module is required. Product List 1 LoRaE220 Unit 1 Grove cable, 20cm 1 Antenna Other Content Power note: ensure that the supply voltage does not exceed 5V, because overvoltage may damage the module. When integrating the M5Stack LoRa Unit with Antenna E220, confirm host voltage and serial wiring before powering the system. The onboard DIP switch lets developers choose the required operating mode without a complicated setup process. For a typical long range IoT module workflow, use normal transmission for active data links, WOR modes for wake-up based designs, and sleep mode when the LoRa serial communication unit needs to reduce power draw. Resources M5Stack U170 Official Documentation M5Unit LoRa E220 GitHub Library M5Stack Hardware Repository FAQ What is M5Stack LoRa Unit with Antenna E220 used for? M5Stack LoRa Unit with Antenna E220 is used as a 920MHz LoRa communication module for long-range serial wireless links, remote sensors, automation systems, and IoT telemetry. Which frequency band does M5-U170 support? M5-U170 supports the 920MHz band, specifically 920.6~928.0MHz. How far can the module communicate? The M5Stack LoRa Unit E220 communication distance can reach up to 5km under suitable conditions, antenna placement, and local RF environment. Does it support low-power wake-up? Yes. The LoRa serial communication unit supports Wake on Radio and multiple operating modes, making it useful for low-power long range IoT module designs. What voltage should I use? Use the specified DC 3.3V to 5.5V range and keep the supply at 5V or below. Exceeding the recommended supply voltage may damage the M5Stack LoRa Unit with Antenna E220.
