The SIM7028 module support LTE Category NB2, 2-HARQ. The physical dimension of SIM7028 is 17.6mm×15.7mm×2.3 mm.

It is designed for applications that need low latency, Low throughput datacommunication in a variety of radio propagation conditions.

Product advantages

  • Low power consumption: The module supports PSM low power mode. Theoretically, two No. 5 batteries can support 10 years

  • Wide coverage: Compared with GSM, NB-IoT has a strong gain and a wide signal coverage, which also enables the product to have wireless communication capabilities in locations such as basements

Compare to the decedent SIM7020

Feature SIM7028 SIM7020
Network Support LTE Cat M1 (eMTC), LTE Cat NB2 (NB-IoT), EGPRS (2G fallback) LTE Cat NB1 (NB-IoT), LTE Cat NB2 (NB-IoT)
2G Support Yes No
Maximum Uplink Speed - LTE Cat M1: 375 kbps
- LTE Cat NB2: 127 kbps
- EGPRS: 85.6 kbps 		- LTE Cat NB1: 62.5 kbps
- LTE Cat NB2: 62.5 kbps
Maximum Downlink Speed - LTE Cat M1: 375 kbps
- LTE Cat NB2: 158 kbps
- EGPRS: 85.6 kbps 		- LTE Cat NB1: 27.2 kbps
- LTE Cat NB2: 27.2 kbps
Power Consumption Moderate (higher due to Cat M1 and 2G) Very low (optimized for NB-IoT applications)
Best Use Cases - Asset tracking
- Wearables
- Smart metering		 - Smart agriculture
- Environmental monitoring
- Basic sensors
Cost Higher (due to wider network support) Lower (optimized for cost-sensitive IoT applications)
Module Size Similar form factor for both modules Similar form factor for both modules
Physical Interfaces UART, I2C, GPIOs UART, I2C, GPIOs
AT Command Compatibility Yes (standard SIMCom AT commands) Yes (standard SIMCom AT commands)
Market Availability More expensive but offers broader coverage Lower cost and tailored for NB-IoT-only markets
Data Rate Comparison Higher data rates (Cat M1 and 2G support) Lower data rates (NB-IoT only)

Diagram

Pin definitions

Comparison

compare to SIM7020-dat

  • no I2C, SPI
  • USB in progress, early version
  • extra IO_1833_sel

ref

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