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Smart Industrial IoT Gateway. Provideing users with stable network connectivity and data transmission.

Product Feature

  • Auto GSM/GPRS/EDGE/UMTS/WCDMA/HSDPA/HSUPA/HSPA+/FDD LTE/TDD LTE/Cat.M1/Cat.NB1 connections (No AT command required)
  • Dual-SIM backup (push-push or MFF type optional)
  • Transparent TCP and UDP protocol connections
  • ICMP, DDNS, SNTP and Telnet
  • Modbus RTU to TCP
  • Auto rebooting via SMS and Timer
  • Configuration and firmware upgrading via USB and RCMS
  • Sending SMS if DI is triggered
  • Robust industrial design (9 to 36V DC, -40 to +75 °C extended operating temperature, desktop or wall mounting or DIN rail mounting)
  • Support bridge (modem only) mode, via serial port or USB port


The Robustel Smart Industrial IoT Gateway M1200 is a compact cellular gateway based on GSM/GPRS/


TDD LTE/Cat.M1/Cat.NB1 networks. This dual-SIM gateway enables remote data transmission of local serial ports and I/O, and supports such interfaces as RS-232, RS-485 and mini-USB. M1200 provides users with stable network connectivity and data transmission. It is available to meet industrial application demands for its standards-compliant industrial designs. As a universal gateway, it can be applied in many scenarios such as Energy, Transportation and Agriculture, etc.

Robustel is a leading global industrial IoT/M2M hardware and solution provider. Since its establishment in 2010 in Guangzhou, China, Robustel has been focusing on designing and manufacturing industrial cellular routers, gateways, modems, cloud platforms and E2E solutions. In order to support global business in more than 100+ countries and regions, Robustel has set up local offices in Germany, Australia, the Netherlands, the UK, Japan and Hong Kong.

Cellular Interface

Number of antennas1
ConnectorSMA, female
SIM slot2 (3.0 V & 1.8 V)

Serial Interface

Number of ports1 x RS-232 + 1 x RS-485
Connector10-pin 3.5 mm RP female socket with lock
Baud rate300 bps to 115200 bps
RS-232TxD, RxD, GND
RS-485A (Data+), B (Data-)

Digital Input / Digital Output

Number of ports2 x DI (wet contact) + 1 x DO (wet contact)
Connector10-pin 3.5 mm RP female socket with lock
ESD withstand levelcontact: ±6 K, air: ±8 K
Absolute maximum VDC“V+” +5V DC (DI), 30V DC (DO)

USB Port

Number of ports1 x Mini USB for configuration and power supply
ConnectorMini Female
Speed2.0 high speed up to 480 Mbit/s


LED indicators1 x RUN + 1 x RSSI (red/green bi-color light)
Built-inRTC, Watchdog, Timer

Software(Basic features of RobustOS)

Network protocolsPPP, TCP, UDP, ICMP, HTTP, HTTPs, DNS, NTP, SMTP, Telnet, SSH2, DDNS, etc.
VPN tunnelIPsec, OpenVPN, GRE
ManagementWeb, CLI, SMS
Serial portTransparent, TCP Client/Server, UDP, Modbus RTU Gateway

App Center (Available Apps for RobustOS)

AppsLanguage, RobustLink
*Request on demand. For more Apps please visit

Power Supply and Consumption

Connector10-pin 3.5 mm RP female socket with lock
Input voltage9 to 36V DC
Power consumptionIdle: 50 to 70 mA@12 V
Data link: 300 mA (peak) @12 V

Physical Characteristics

Ingress protectionIP30
Housing & WeightPlastic, 106 g
Dimension85 x 75 x 28.5 mm
InstallationDesktop or wall mounting or 35 mm DIN railmounting
RegulatoryCE, RCM, FCC, PTCRB, IC
EnvironmentalRoHS 2.0, WEEE
EMIEN 55032: 2015 (CE) Class B
EN 55032: 2015 (RE) Class B
EMSIEC 61000-4-2 (ESD) Contact Level 2; Air Level 3
IEC 61000-4-3 (RS) Level 2
IEC 61000-4-4 (EFT) Level 2
IEC 61000-4-5 (Surge) Level 3
IEC 61000-4-6 (CS) Level 2
Name Type Version Release Date
M1200 Datasheet Datasheet V1.1.3 24 July 2020


Antenna Number 1
Frequency Bands*
4G -
3G B1/B2/B5/B8/B19
2G B2/B3/B5/B8
Operating Temperature -40 to +75 °C
Storage Temperature -40 to +85 °C
Relative Humidity 0 to 95% RH


Antenna Number 1
Frequency Bands*
4G EMEA:B1/B3/B5/B7/B8/B20; B38/B40/B41 AU: B1/B2/B3/B4/B5/B7/B8/B28; B40
3G EMEA: B1/B5/B8 AU: B1/B2/B5/B8
2G EMEA: B3/B8 AU: B2/B3/B5/B8
Operating Temperature -40 to +75 °C
Storage Temperature -40 to +85 °C
Relative Humidity 0 to 95% RH


Antenna Number 1
Air Interface EGPRS/Cat.M1/Cat.NB1
Frequency Bands*
4G Global:B1/B2/B3/B4/B5/B8/B12/B13/ B18/B19/B20/B26/B28; B39(for Cat-M1 only)
3G -
2G Global:B2/B3/B5/B8
Operating Temperature -40 to +75 °C
Storage Temperature -40 to +85 °C
Relative Humidity 0 to 95% RH

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