One isolated RS485 interface and one isolated RS232 interface; no direct DI, DO, AI or AO channels
Y502-L LoRaWAN Serial DTU with Isolated RS485 and RS232
LoRaWAN Serial DTU
Y502-L connects meters, PLCs and serial sensors to LoRaWAN through isolated RS485 and RS232. Supports scheduled polling and transparent transport via a compatible gateway.
Key Features
LoRaWAN 1.0.3 with OTAA/ABP activation and Class A/Class C operation
Up to 16 scheduled acquisition scripts plus a heartbeat task, using HEX or ASCII commands
Modbus RTU requests, custom serial frames, data-change reports and remote serial commands
Transparent serial data travels in LoRaWAN packets; payload limits and downlink timing affect request/response operation
9–28 VDC supply, 35 mm DIN-rail mounting and 15 kV ESD protection on both serial interfaces
Specifications
LoRaWAN Radio
- Protocol
- LoRaWAN 1.0.3
- Activation
- OTAA / ABP
- Device Classes
- Class A / Class C
- Frequency Plans
- CN470 (reference), EU433, EU868, AU915, IN865, AS923, RU864, US915; region-specific hardware; specify the AS923 sub-plan when ordering
- Transmit Power
- -1 to 22 dBm, configurable within regional limits
- Bandwidth
- 125 kHz
- Spreading Factor
- SF7–SF12
- Receiver Sensitivity
- -135 dBm at SF12, BW125 kHz
Serial Interfaces
- RS485
- 1 isolated RS485, A+ / B−; default 9600 bps, 8-N-1
- RS232
- 1 isolated 3-wire RS232, TXD / RXD / GND; default 115200 bps, 8-N-1
- Baud Rates
- 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
- Format
- 8 data bits; 1 or 2 stop bits; none, odd, or even parity
- ESD Protection
- 15 kV on RS485 and RS232
- Direct I/O
- None: 0 DI, 0 DO, 0 AI, 0 AO
Acquisition
- Modes
- Transparent transmission and active acquisition
- Tasks
- Up to 16 configurable acquisition scripts plus a heartbeat task
- Command Formats
- HEX or ASCII; Modbus RTU or custom serial frames
- Maximum Script Length
- 40 bytes
- Script Interval
- 10–86,400 s
- Reporting
- Periodic acquisition, heartbeat, and data-change reporting
- Remote Functions
- Remote parameter settings and serial read/control commands; supported commands depend on the installed firmware
Power Supply
- Voltage
- DC 9–28 V
- Recommended Adapter
- DC 12 V / 1 A
- Maximum Current
- 0.5 A at DC 12 V
- Average Power
- ≤0.5 W in low-duty-cycle operation
Environmental
- Operating Temperature
- -40 to 85 °C
- Storage Temperature
- -50 to 95 °C
- Humidity
- 0–95% RH, non-condensing
Mechanical
- Dimensions
- 87.65 × 36.54 × 59.3 mm
- Weight
- Approximately 0.5 kg
- Mounting
- 35 mm DIN rail
- Antenna Connector
- SMA female
Deployment
- Gateway Compatibility
- Y501-L or Y511-L with a matching regional plan and channel group, plus compatible local or remote Network Server settings
- Serial Transport
- Serial data travels in LoRaWAN packets. Payload limits, airtime and downlink scheduling affect frame length and request timeouts.
- Downlinks
- Class A receives downlinks after an uplink. Class C provides more receive opportunities. Delivery time depends on airtime, server scheduling and regional radio limits.
- Payload
- Payload format, FPorts and decoding rules depend on the installed firmware
Product Documents
Related Products
Talk to our technical team.
Tell us about your interfaces, network environment, and deployment requirements.