EWM22A-400R22D & EWM22A-400R30D LoRa Wireless Modules
Industrial-grade RS485 LoRa modules operating at 433/470MHz with 22dBm or 30dBm transmit power for long-range IoT connectivity.
- LoRa spread spectrum technology for extended range
- RS485 interface for industrial device integration
- 10km maximum communication distance (30dBm model)
- Ultra-low 3μA sleep current for battery operation
- Industrial temperature range (-40°C to +85°C)
Technical Specifications
RF Parameters
- Frequency Range: 410.125-493.125MHz
- Transmit Power: 22dBm (R22D) / 30dBm (R30D)
- Receiver Sensitivity: -129dBm (R22D) / -132dBm (R30D)
- Air Data Rate: 2.4K-62.5Kbps programmable
Electrical Parameters
- Operating Voltage: 4.5-5.5V DC
- Transmit Current: 110mA (R22D) / 620mA (R30D)
- Receive Current: 22mA (R22D) / 25mA (R30D)
- Sleep Current: 750μA (R22D) / 740μA (R30D)
Hardware Specifications
- Interface: RS485 with PH2.0 connector
- Antenna: SMA-K (50Ω impedance)
- Dimensions: 38×23mm (R22D) / 26×48mm (R30D)
- Modulation: LoRa (SEMTECH SX1262/SX1268)
Industrial Applications
- Smart agriculture monitoring systems
- PV station monitoring and management
- Building automation solutions
- Industrial sensor networks
- AMI smart metering infrastructure
Advanced Functionality
Network Capabilities
- Multi-hop relay networking support
- Encrypted communication with user-defined keys
- LBT (Listen Before Talk) channel assessment
Operation Modes
- Transparent transmission mode
- WOR (Wake-on-Radio) low-power mode
- Configuration mode via AT commands
- Deep sleep mode (3μA current)
Compliance & Reliability
- Industrial-grade component rating
- 32MHz high-precision crystal oscillator
- Parameter retention during power loss
- Built-in watchdog timer for system recovery
