The GTM-203M-3GWA is a quad-band 3G WCDMA industrial cellular modem equipped with RS-232 and USB interfaces. It operates on Quad-band WCDMA 850/900/1900/2100 MHz and Quad-band GSM 850/900/1800/1900 MHz frequencies. The GTM-203M-3GWA supports 3G in areas where 3G service is available. This device has the ability to auto-switch between 3G or GPRS signals to maintain continuous connection.
With an integrated TCP, UDP/IP stack, the GTM-203M-3GWA is capable of working with simple controllers that have serial communication ports, which allows easy connections to the modem without the need for special drivers. This type of device configuration that works with SMS and 3G/GPRS opens the door for numerous kinds of connection applications with various PLC and PC. With the voice interface, the GTM-203M-3GWA 3G cellular controller can be used in the alarm system with sounds.
- Industrial design, making it a reliable cellular solution for data collection adn transmission
- Reliable GSM/GPRS/EDGE/WCDMA/HSPA network connectivity, providing fast and cost-effective long-range wireless
- Designed for Data, SMS, and Voice Applications
- Support TCP Server, TCP Client, UDP Client Connection stack
- Support Standard AT Commands
- A Digital Input Channel for Resetting the System
- LED Indicators for 2G/3G and Power Indication
- USB 2.0 high speed
- USB Driver for Windows, LinPAC (Linux 2.6)
- DIN rail mountable
Applications
- Remote data monitoring and control
- Water, gas and oil flow metering and schedule
- Power station monitoring and control
- Oil field, weather forecast, environmental protection, street lights monitoring and control
- Fleet management
- Vending machine monitoring and maintenance
- Vehicle logistics and diagnostic controlling
| GSM/GPRS Interface |
| Frequency Band |
GSM 850/900/1800/1900 MHz |
| GPRS Connectivity |
GPRS class 12; GPRS station class B |
| CSD |
GSM max. 9.6 kb/s |
| UMTS max. 64 kb/s |
| Coding Schemes |
CS 1, CS 2, CS 3, CS 4 |
| 3G Interface |
| Frequency Band |
WCDMA 850/900/1900/2100 MHz |
| PSD |
HSUPA max. 5.76 MB/s |
| HSDPA max. 7.2 MB/s |
| WCDMA max. 384 kb/s Download/Upload link |
| SMS |
| SMS |
MT, MO, CB, Text, and PDU mode |
| Comm. Interface |
| COM Port |
RxD, TxD, GND |
| COM Port Baud Rate |
9600 bps ~ 115200 bps (default：115200 bps) |
| USB |
USB 2.0 (high speed) |
| USB Driver Support |
Windows XP/Vista/7/8/Server 2012, Linux |
| LED Indicators |
| Power |
Red |
| 3G/GSM |
Green |
| Power |
| Protection |
Power reverse polarity protection |
| Frame Ground Protection |
ESD, Surge, EFT, Hi-Pot |
| Required Supply Voltage |
+10 VDC ~ +30 VDC |
| Rated Current |
30 ~ 15 mA / 10 ~ 30 VDC |
| Reset Input |
| Input Type |
Isolated, 3750 Vrms |
| On Voltage Level |
+3.5 VDC ~ +30 VDC |
| Off Voltage Level |
+1 VDC max. |
| Input Impedence |
3 kΩ, 0.25W |
| Mechanical |
| Casing |
Metal |
| Dimensions (W x L x H) |
28 mm x 78.5 mm x 100 mm |
| Installation |
DIN-Rail |
| Environmental |
| Operating Temperature |
-25°C ~ 70°C (-13°F ~ +158°F) |
| Storage Temperature |
-40°C ~ 80°C (-40°F ~ +176°F) |
| Humidity |
5 ~ 90% RH, non-condensing |
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