🔹 SIM7020C 4G NB-IoT Module with Antenna – Narrowband IoT Communication Board
The SIM7020C is a compact NB-IoT (Narrowband Internet of Things) module based on the SIM7020C chipset, designed specifically for the Chinese market and networks operating on LTE bands. It enables low-power, wide-area wireless communication for IoT applications, offering excellent coverage in challenging environments. This package includes the module with an antenna for immediate deployment.
✅ Specifications:
Module Base: SIM7020C NB-IoT Module
Network Type: NB-IoT (Narrowband IoT) – 4G LTE Category NB1
Frequency Bands (SIM7020C):
B1 / B3 / B5 / B8 (varies by region – check local carrier support)
Data Rate:
Downlink: Up to 127 Kbps
Uplink: Up to 158 Kbps
Interface: UART (Serial) AT commands
Power Supply: 3.3V – 4.2V DC (typical 3.8V)
Power Consumption:
Sleep Mode: < 10µA
Idle Mode: < 1mA
Active Mode: ~50mA – 200mA (varies with signal strength)
SIM Card: Micro SIM (2FF) / Nano SIM (depending on board design)
Antenna: Included (external antenna with IPEX/U.FL connector)
Network Protocol: IPv4/IPv6, TCP/UDP, HTTP/HTTPS, CoAP, LwM2M, MQTT (via AT commands or firmware)
Operating Temperature: -40°C to +85°C
📦 Package Includes:
✔️ 1 x SIM7020C NB-IoT Module (breakout board)
✔️ 1 x External NB-IoT Antenna (IPEX/U.FL connector)
✔️ Pin headers (may require soldering)
📦 Features:
✔️ Ultra-low power consumption for battery-powered devices
✔️ Deep coverage (20dB+ better than GSM)
✔️ Designed for Chinese network bands (B1/B3/B5/B8)
✔️ AT command interface for easy integration
✔️ Compact design for space-constrained applications
✔️ Support for multiple IoT protocols
✔️ Embedded network stack
✔️ Compatible with Arduino, ESP32, STM32, and other microcontrollers
✔️ Antenna included for immediate setup
📦 Applications:
✔️ Smart metering (water, gas, electricity)
✔️ Asset tracking and logistics
✔️ Environmental monitoring (air quality, weather stations)
✔️ Smart agriculture (soil monitoring, livestock tracking)
✔️ Smart parking sensors
✔️ Industrial IoT (IIoT) remote monitoring
✔️ Smart city infrastructure
✔️ Remote alarm and security systems
⚠️ Important Notes:
NB-IoT network required. SIM7020C requires an active NB-IoT network operating on supported bands and a compatible NB-IoT SIM card. Verify coverage in your area before purchase.
Chinese market variant. SIM7020C is optimized for Chinese networks. For other regions, verify band compatibility.
Power supply. Ensure stable 3.8V power supply capable of handling peak currents (~200mA).
AT commands. Controlled via standard AT commands over UART.
Firmware. May require firmware updates for specific network operators.
Not backward compatible with 2G/3G/4G LTE networks. NB-IoT only.



















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