The M5Stack Module COMX NB-IoT is a stackable multi-band NB-IoT module with SIM7020G, offering low-power wide-area connectivity, strong signal penetration, and flexible power input for IoT applications like metering, tracking, and remote monitoring. The M5Stack Module COMX NBIoT is a stackable multi-band NB-IoT wireless communication module, equipped with the SIM7020G communication module. The module supports PSM and eDRX low-power modes. It also has wide signal coverage, and compared to GSM, NB-IoT has strong signal gain, which enables the product to have wireless communication capabilities in locations such as basements. The module comes with a DC power input, allowing it to be powered by an external power supply of 5 ~12V. For easy pin configuration, a DIP switch is used to set the pins. The SIM7020G module is an optimal solution for low-latency, low-power, and low-throughput applications, making it highly suitable for IoT applications such as smart meters, remote control, asset tracking, remote monitoring, telemedicine, and shared bikes. We also stock the M5Stack COM.Zigbee Module (CC2630F128) version. Features * Stackable design * Supports low-power modes * Strong signal access capability * External independent power supply * AT command control * SIM card type: MicroSIM * Status signals: Two LED indicators * External antenna: SMA antenna * Serial communication: UART 115200bps * Frequency bands: * B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B66/B70/B71/B85 * Data transmission: Uplink: 150Kbps Downlink: 126Kbps * Network protocols: TCP/UDP/HTTP/HTTPS/TLS/DTLS/DNS/NTP/PING/LWM2M/COAP/MQTT/MQTTS Specifications Supported bands B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B66/B70/B71/B85 Network protocols TCP/UDP/HTTP/HTTPS/TLS/DTLS/DNS/NTP/PING/LWM2M/COAP/MQTT/MQTTS Communication method UART 115200bps DC interface specification 5.5mm Net weight 40g Gross weight 75g Product Size 54 x 54 x 13.2mm Resources * Product documentation Package Contents * 1x M5Stack COM.NB-IoT Module (SIM7020G) * 1x SMA antenna