Y201-G Mini 4G DTU Specification

Reference: Y201-G Technical ManualCountry Coverage: Country Coverage Quick Guide

Contents

1. Overview
2. Ordering Information
3. Key Features
4. Technical Specifications
5. Interfaces and Indicators
6. Mechanical and Installation
7. Application Notes

---

1. Overview

Y201-G is the 4G Cat.1 model in the Y201 mini DTU family. It bridges serial devices to cellular networks and supports nationwide 4G connectivity, wide-range power input, and four transparent Socket channels. The device supports TCP, UDP, HTTP, MQTT, peer-to-peer transmission, SMS transparent transmission, and Modbus polling with JSON reporting.

It is designed for industrial remote monitoring, energy metering, building automation, and environmental monitoring where wired network access is not available.

Item	Description
Positioning	Industrial 4G Cat.1 serial DTU
Power Input	9 to 36 VDC wide-range input
Serial Interface	RS232 / RS485 / TTL, depending on model
Cellular Network	LTE Cat.1
Socket Channels	4 channels per serial port: A / B / C / D
Configuration	Config tool, serial AT, network AT, SMS AT

Highlights

• Compact housing for easy integration into control cabinets and edge devices
• Four concurrent Socket channels for multi-platform data access
• SMS transparent transmission, transparent AT, and offline cache for weak-network scenarios
• Hardware and software watchdogs with self-recovery logic
• Modbus active polling and JSON reporting to reduce platform-side parsing work

---

2. Ordering Information

2.1 Model Naming

Y201-G-IF

• G: 4G Cat.1 uplink
• IF: Serial interface type, 485, 232, or TTL

2.2 SKU List

SKU	Serial Interface	Typical Application
Y201-G-485	RS485	Industrial bus and meter collection
Y201-G-232	RS232	Legacy serial equipment networking
Y201-G-TTL	TTL	Direct connection to embedded controller boards

2.3 Standard Package

1 x Y201-G device, electronic documentation, warranty information.
Optional accessories: 4G antenna, power adapter, serial cable harness, mounting accessories.

---

3. Key Features

1. Nationwide 4G Cat.1: Supports mainstream FDD and TDD bands for industrial cellular deployments.
2. Wide Voltage and High Reliability: 9 to 36 VDC input with reverse-polarity protection and Level 4 ESD protection.
3. Flexible Serial Options: Supports RS232, RS485, and TTL with configurable serial parameters.
4. Multi-Protocol Transparent Transmission: Supports TCP, UDP, HTTP, MQTT, peer-to-peer transmission, and SMS transparent transmission.
5. Four-Socket Architecture: A single serial port can run channels A, B, C, and D in parallel.
6. Enhanced Data Handling: Supports registration packets, heartbeat packets, offline cache, and data format conversion.
7. Smart Data Collection: Supports active Modbus polling and JSON reporting.
8. Remote O&M Ready: Supports local upgrade, HTTP upgrade, remote AT, and remote device management.

---

4. Technical Specifications

4.1 Electrical and Environmental

Parameter	Specification
Dimensions	74.6 x 22.6 x 18.1 mm, excluding tabs, antenna connector, and terminal
Operating Temperature	-35 to 75 C, standard version
Extended Temperature	-40 to 85 C, extended version
Operating Humidity	5 to 95% RH, non-condensing
Power Connector	5-pin, 2.54 mm pluggable terminal
Supply Voltage	9 to 36 VDC
Current Consumption	100 mA @ 12 V

4.2 RF Specifications

Parameter	Specification
LTE-FDD	B1 / B3 / B5 / B8, uplink/downlink 5/10 Mbps
LTE-TDD	B34 / B38 / B39 / B40 / B41, uplink/downlink 2/8 Mbps
TX Power, FDD	Class 3, 23 dBm +/-2 dB
TX Power, TDD	Class 3, 23 dBm +1/-3 dB

4.3 Serial Specifications

Parameter	Specification
Interface Type	RS232, 3-pin / RS485, 2-pin / TTL, 3-pin
Baud Rate	1200 to 460800 bps, default 115200
Parity	NONE / ODD / EVEN
Data Bits	8
Stop Bits	1 / 2
Flow Control	NFC / 485

4.4 Protocol and Software Functions

Item	Specification
Network Protocols	DNS / TCP / UDP / PING
Transparent Transmission	TCP Client / UDP Client / HTTP / MQTT / Peer-to-peer / SMS
Socket Capability	Socket A / B / C / D per serial port, A enabled by default
Packetization	Length 64 to 1024, default 1024; interval 1 to 300 ms, default 5 ms
Registration / Heartbeat	Independently configurable per serial port, disabled by default
Upgrade Method	Local USB upgrade and HTTP upgrade

---

5. Interfaces and Indicators

5.1 Main Interfaces

Interface	Description
Power Terminal	5-pin, 2.54 mm terminal for wide-range DC input
Serial Terminal	RS232 / RS485 / TTL, depending on model
SIM Slot	Cellular access
Antenna Connector	4G antenna connection
USB	Micro USB for upgrade and maintenance

5.2 LEDs and Button

Item	Meaning
Power	Steady on when powered
WORK	Fast blink: not registered; slow blink: registered to base station
DATA	Off: server disconnected; on: connected; blinking: serial data activity
Reload Button	Press and hold for 3 to 10 s to restore default parameters

---

6. Mechanical and Installation

Item	Description
Dimensions	74.6 x 22.6 x 18.1 mm
Mounting	Bracket or DIN-rail mounting, depending on project accessories

Installation recommendations:

• Keep the antenna away from strong interference sources and high-current cables.
• Add fuse and surge protection on the power side.
• For RS485 wiring, use shielded twisted pair and proper grounding.

---

7. Application Notes

• 4G cloud connectivity for serial devices: Upload PLC, sensor, or meter data to a cloud platform over 4G.
• Multi-center data access: Use four Socket channels to separate monitoring, maintenance, backup, and business traffic.
• SMS emergency channel: Use SMS transparent transmission or SMS AT for backup control in weak-network scenarios.
• Active data collection and reporting: Enable Modbus polling and JSON upload to reduce polling load on the platform.
• Remote maintenance and upgrade: Use network AT and HTTP upgrade to reduce on-site service costs.

For detailed parameter settings and AT commands, see the Y201-G Technical Manual.

---

• Manufacturer: Hunan YenGear Tech Co., Ltd.
• Address: Room 21014, Building 1, Fudi Xingguang Tiandi, Yingxin Road, Yuhua District, Changsha, Hunan, China
• Email: hi@yengear.com
• Website: www.yengear.com