Qualcomm LTE Cat.4 cellular connection with 2G/3G fallback where those services remain available
Y212-G 4G LTE Cat.4 Serial Gateway with I/O
4G Serial Gateway
Y212-G connects RS232/RS485 devices to 4G LTE Cat.4 networks, with a secondary TTL UART, two digital I/O and one 0–8 V analog input for field monitoring.

Key Features
RS232/RS485 main serial interface up to 921,600 bps, plus a 3.3 V/5 V TTL secondary UART on current hardware
Two configurable digital I/O and one 0–8 V analog input; 0–6 V is recommended for best analog linearity
6–28 VDC supply, remote configuration and OTA upgrades, with panel or 35 mm DIN-rail mounting
Specifications
Cellular
- Module
- Qualcomm LTE Cat.4 with 2G / 3G fallback where available
- Bands
- LTE-FDD B1/B3/B5/B8; LTE-TDD B34/B38/B39/B40/B41; WCDMA B1/B8; CDMA2000 BC0; TD-SCDMA B34/B39; 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 3.3 V / 5 V, available on current Qualcomm-based hardware
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 6–28 V
- 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
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