Y212-G 4G Serial Gateway Specification

Reference: Y212-G / Y212-GWR Technical ManualCountry Coverage: Country Coverage Quick Guide

Contents

1. Overview
2. Ordering Information
3. Key Features
4. Technical Specifications
5. Interfaces and Pin Definitions
6. Mechanical and Environmental
7. Installation and Wiring
8. Important Notes

1. Overview

Y212-G is an industrial serial-to-4G gateway designed to bring RS232 and RS485 devices online quickly. With a built-in Qualcomm Cat.4 LTE module, 2G / 3G fallback, SIM slot, and SMA antenna interface, it enables plug-and-play data collection, transparent transmission, remote configuration, OTA upgrade, and alarm reporting without changing legacy field wiring.

Item	Description
Product Type	Industrial 4G serial gateway
Cellular Uplink	Qualcomm Cat.4 multi-mode 4G with 2G / 3G fallback
Serial Interface	RS232 + RS485
Local I/O	2 x GPIO plus 1 x 0 to 8 V analog input
Power Input	6 to 28 VDC, typical 12 V / 2 A

Highlights

• Multi-band 4G coverage for domestic full-network use and many overseas deployments
• RS232 and RS485 in one device for easier field integration
• Built-in GPIO and analog input for simple local signal collection
• OTA, logs, and remote diagnostics reduce on-site maintenance
• Compact design supports both panel and DIN-rail installation

2. Ordering Information

2.1 Model Naming

Y212 - G
  |     \- G: 4G / 5G cellular communication family, including LTE Cat.4 and Cat.1 variants
  \------- Y212: Y2 series serial data collection terminal

2.2 SKU and Configuration

SKU	Description	Network Bands	Power Range
Y212-G	Qualcomm Cat.4 serial gateway, RS232 + RS485, 2 x IO, 1 x AD, remote maintenance support	7 modes / 15 bands: GSM EGSM900/DCS1800; WCDMA B1/B8; CDMA2000 BC0; TD-SCDMA B34/B39; LTE-FDD B1/B3/B5/B8; LTE-TDD B34/B38/B39/B40/B41	6 to 28 VDC

2.3 Package Contents

• Y212-G main unit x1
• 4G omnidirectional antenna, SMA x1
• SIM eject pin x1
• DIN-rail clip, optional x1
• Quick-start card and warranty card

2.4 Optional Accessories

• USB-to-RS485 debug cable
• 12/24 VDC industrial power adapter
• Lightning protection kit and shielded twisted pair cable

2.5 Country Support Quick Guide (Current Cat.4 Version)

This model supports the following cellular bands:

• GSM: EGSM900 / DCS1800
• WCDMA: B1 / B8
• CDMA2000/EVDO: BC0
• TD-SCDMA: B34 / B39
• LTE-FDD: B1 / B3 / B5 / B8
• LTE-TDD: B34 / B38 / B39 / B40 / B41

Use the table below to check hardware support for your deployment country:

Country or Region	Decision	Typical Band Match Summary
China Mainland	Supported	Strong overlap with LTE FDD B1/B3/B5/B8 and LTE TDD B34/B38/B39/B40/B41
India	Supported	Common LTE bands B1/B3/B5/B8/B40/B41 have strong overlap
Thailand, Vietnam, Indonesia, Malaysia, Philippines, Singapore	Supported in most areas	Main LTE deployments often include B1/B3/B5/B8; check carrier by site
Japan, South Korea	Partially Supported	Partial overlap (mainly B1/B3/B5), but some operator primary bands are outside this model
EU and UK (Germany, France, UK, Italy, Spain, Netherlands, Poland)	Partially Supported	Overlap on B1/B3/B8; missing common low bands such as B20/B28 in many networks
Australia, New Zealand	Partially Supported	Overlap exists, but missing B28 can reduce rural or indoor coverage
United States, Canada	Not Recommended	Key local LTE bands used by major operators are not sufficiently covered

Important: This is a band-overlap reference, not a carrier guarantee. Actual availability depends on local operator network planning, IoT SIM profile, APN, and certification requirements. Fallback note: 2G/3G fallback works only where local 2G/3G service is still active.

3. Key Features

1. Multi-Mode 4G Cat.4: Qualcomm Cat.4 cellular uplink with 2G / 3G fallback supports domestic full-network use and many overseas deployments.
2. RS232 + RS485 in One Box: Connect common serial devices without adding external converters.
3. Cloud-Ready Protocols: Supports TCP, UDP, HTTP, HTTPS, MQTT, MQTTS, and WebSocket.
4. Remote OTA and Diagnostics: Configure, upgrade, and troubleshoot devices without site visits.
5. Built-In I/O and Analog Input: 2 x GPIO plus 1 x 0 to 8 V input support local status collection.
6. Industrial Input Protection: 6 to 28 VDC input with surge and reverse-polarity protection.
7. Flexible Online Modes: Always-online, wake-up, on-demand, and scheduled modes fit different response and power needs.
8. Compact Industrial Installation: Panel or 35 mm DIN-rail mounting speeds up cabinet deployment.

4. Technical Specifications

4.1 Wireless and Network

Parameter	Specification
Cellular Module	Qualcomm Cat.4 module with 2G / 3G fallback and multiple hardware watchdogs
Radio Modes	7 modes / 15 bands: GSM EGSM900/DCS1800; WCDMA B1/B8; CDMA2000 BC0; TD-SCDMA B34/B39; LTE-FDD B1/B3/B5/B8; LTE-TDD B34/B38/B39/B40/B41
Protocol Stack	TCP, UDP, HTTP, HTTPS, MQTT, MQTTS, WebSocket
SIM	Drawer-style 1.8 V / 3 V SIM or USIM, full-size card
Antenna Interface	50 ohm SMA female, supports 4G and GNSS coexistence antennas
GNSS Positioning	Optional BeiDou plus GPS module with serial and server-side output

4.2 Communication Interfaces

Parameter	Specification
Main Serial Port	RS232 + RS485, shared terminal, 1200 to 921600 bps, default 9600-8-N-1
Secondary UART	TTL 3.3 V / 5 V, available on the current Qualcomm-based Y212-G hardware
GPIO	2 x, configurable as input or output, 3.3 V or 1.8 V logic
Analog Input	1 x 0 to 8 V, default input impedance >100 kohm
USB	Available through a debug cable for PC configuration, optional accessory

4.3 Electrical and Power Consumption

Parameter	Specification
Supply Voltage	6 to 28 VDC
Recommended Power	Power adapter rated >=2 A
Typical Consumption	Online idle 20 to 40 mA @ 12 V; data transmission 60 to 100 mA @ 12 V; GNSS adds about 30 to 40 mA
Protection	Reverse-polarity protection, over-voltage protection, surge protection, hardware and software watchdog

4.4 Input and Output Capability

Parameter	Specification
IO1 / IO2	Configurable through GPI / GPO commands, input or output mode selectable
AD Range	0 to 8 V; for best linearity, 0 to 6 V is recommended
Sampling Mode	Periodic sampling or command-triggered sampling, with data forwarded to the server

4.5 Environmental

Parameter	Specification
Operating Temperature	-40 to 85 C
Storage Temperature	-45 to 90 C
Relative Humidity	5 to 95% RH, non-condensing
Altitude	<= 2000 m
Reliability	MTBF > 200,000 h, typical

5. Interfaces and Pin Definitions

5.1 Terminal Definition

Pin	Signal	Description
1	IO1	Configurable digital input or output, high level 3.3 V or 1.8 V
2	232-RX	Connect to external device TX, RS232 input
3	232-TX	Connect to external device RX, RS232 output
4	485B-	RS485 differential B-
5	485A+	RS485 differential A+
6	AD	0 to 8 V analog input
7	R2-TTL	Secondary UART RX2 on Qualcomm version
8	T2-TTL	Secondary UART TX2 on Qualcomm version
9	IO2	Configurable digital input or output
10	GND	System ground
11	GND	System ground, paralleled with pin 10
12	Vin+	DC positive input, 6 to 28 V

5.2 Interface Summary

Interface	Description
Power Terminal	3.5 mm pluggable 12-pin terminal, recommended 14 to 24 AWG wire, external 2 A fast fuse suggested
SIM Slot	Drawer-style full-size SIM, push-to-eject with lock support
Antenna Port	SMA female, use 4G omnidirectional or directional antenna with good grounding
LEDs	Net, Server, and Data/GPS indicators show network and data status
Reset Button	Press 3 to 5 s for soft reset; press >10 s to restore factory parameters

5.3 LED Status

LED	Status	Description
Net	Off	Network not registered
Net	64 ms on / 3 s off	Registration failed, retrying
Net	64 ms on / 1 s off	Network registered, waiting for server
Net	64 ms on / 300 ms off	Network link established
Server	Off	Not connected to center server
Server	On	Connected to center server
Data/GPS	Off	No data activity or GNSS disabled
Data/GPS	Blinking	Data TX/RX active or GNSS searching satellites
Data/GPS	On	GNSS fix acquired on positioning version

6. Mechanical and Environmental

Item	Specification
Housing Material	Metal enclosure or ABS DIN-rail enclosure, UL94 V-0 flame retardant
Standard Dimensions	80 x 63.8 x 21.3 mm, DIN-rail version
Mounting	35 mm DIN rail, panel screws, or double-sided adhesive
Weight	About 180 g, including housing and terminal
Protection Rating	IP20, indoor installation
Cooling Clearance	Top and bottom >=15 mm, left and right >=10 mm, front >=40 mm

7. Installation and Wiring

1. Install the antenna: Confirm the supplied 4G or GNSS antenna model, tighten it clockwise to the SMA connector, keep it vertical, and avoid metal obstruction.
2. Insert the SIM card: Use the included tool to press the yellow eject button, place an activated IoT SIM in the tray, and push it back in.
3. Wire the power input: Connect GND to pin 11 and DC positive to pin 12. Verify polarity and voltage range before power-up. An external 2 A fuse is recommended.
4. Connect the serial port: Use RS232 on pins 2 and 3 or RS485 on pins 4 and 5. Use shielded twisted pair and proper grounding. If a secondary TTL UART is required, connect pins 7 and 8.
5. Connect IO and analog signals: Wire dry or wet contacts to IO1 and IO2 as needed and keep the analog signal within 0 to 8 V.
6. Mount the device: Snap it onto a 35 mm DIN rail or secure it with screws to prevent loosening in vibration-prone environments.
7. Power on and commission: Check the Net, Server, and Data/GPS LEDs, then complete parameter configuration and connectivity testing through the serial port or remote platform.

8. Important Notes

1. Power Requirements: Use a stable DC power source with sufficient current margin to avoid voltage drop caused by shared high-power loads.
2. Antenna Separation: 4G and GNSS antennas are not interchangeable. Keep at least 30 cm apart and ensure proper grounding.
3. Data Security: HTTPS and MQTTS are optional. They must be enabled on the platform side with correct certificate configuration.
4. Firmware Upgrade: Perform OTA only on a stable network and never power off during upgrade.
5. Lightning Protection: In outdoor or high-surge environments, use surge protection and proper grounding to protect the communication interfaces.