User's Manual

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RS485 to LoRaWAN Converter User Manual 6 / 30
1.2 Specifications
Hardware System:
➢ STM32L072CZT6 MCU
➢ SX1276 Wireless Chip
➢ Power Consumption (exclude RS485 device):
 Idle: 32mA@12v
 20dB Transmit: 65mA@12v
Interface for Model:
➢ RS485
➢ Power Input 7~ 24V DC.
LoRa Spec:
➢ 168 dB maximum link budget.
➢ Programmable bit rate up to 300 kbps.
➢ High sensitivity: down to -148 dBm.
➢ Bullet-proof front end: IIP3 = -12.5 dBm.
➢ Excellent blocking immunity.
➢ Low RX current of 10.3 mA, 200 nA register retention.
➢ Fully integrated synthesizer with a resolution of 61 Hz.
➢ FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
➢ Built-in bit synchronizer for clock recovery.
➢ Preamble detection.
➢ 127 dB Dynamic Range RSSI.
➢ Automatic RF Sense and CAD with ultra-fast AFC.
➢ Packet engine up to 256 bytes with CRC.
1.3 Features
✓ LoRaWAN Class A & Class C protocol (default Class C)
✓ Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
✓ AT Commands to change parameters
✓ Remote configure parameters via LoRa Downlink
✓ Support multiply RS485 devices by flexible rules
✓ Support Modbus protocol
✓ Support Interrupt uplink (Since hardware version v1.2)
1.4 Applications
✓ Smart Buildings & Home Automation
✓ Logistics and Supply Chain Management