7-mode/15-band 4G access with fallback support and industrial watchdog protection
Y212-G Industrial 4G LTE Serial Gateway
4G Serial Gateway
Industrial 4G LTE serial gateway with RS232 and RS485 access, designed for transparent protocol forwarding, remote maintenance, and cloud connectivity in distributed IoT deployments.

Key Features
Dual serial interfaces (RS232 + RS485) with optional secondary TTL UART
Supports TCP, UDP, HTTP, HTTPS, MQTT, MQTTS, and WebSocket transparent transmission
Includes 2 configurable GPIO and 1 analog input for local monitoring and control
Specifications
Cellular
- Module
- Qualcomm LTE Cat.4 (Cat.1 compatible)
- Bands
- LTE-FDD B1/B3/B5/B8; LTE-TDD B34/B38/B39/B40/B41; WCDMA B1/B8; CDMA2000 BC0; GSM EGSM900/DCS1800
- Sim
- Drawer-style 1.8V / 3V SIM or USIM
- Antenna
- 50 ohm SMA female
Network Protocols
- Protocols
- TCP, UDP, HTTP, HTTPS, MQTT, MQTTS, WebSocket
- Operation Modes
- Always-online, on-demand, scheduled, wake-up
Serial Interfaces
- Main Port
- RS232 + RS485
- Baud Rate
- 1,200~921,600 bps (default 9,600-8-N-1)
- Secondary Uart
- TTL 3.3V / 5V on some revisions
I/O And Analog
- Gpio
- 2 configurable IO, input or output
- Analog Input
- 1 channel, 0~8V (0~6V recommended for best linearity)
Power Supply
- Voltage
- DC 5~28V standard, DC 6~65V wide-range option
- Recommended Adapter
- >=2A
- Typical Consumption
- 20~40 mA @ 12V idle, 60~100 mA @ 12V transmission
Environmental
- Operating Temperature
- -40°C ~ +85°C
- Storage Temperature
- -45°C ~ +90°C
- Humidity
- 5% ~ 95% RH, non-condensing
- Reliability
- MTBF > 200,000 h
Mechanical
- Dimensions
- 80 × 63.8 × 21.3 mm
- Weight
- ≈180 g
- Mounting
- 35 mm DIN rail or panel mounting
- Protection
- IP20
Product Documents
Related Products
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