The GT-540P has officially been phased out and no longer available. The suggested replacement is GTP-541M
The GT-540P is a wireless intelligent Active GPRS Remote Terminal Unit with GPS. It is ideal for remote monitoring applications. With the high performance 32 bit CPU, the GT-540P is suit for hard industrial environments. It features a GPRS/GSM module, 6 digital inputs, 2 digital outputs, 1 analog input, 2 RS-232, 1 RS-485 and SD interface. It can be used in M2M application fields to transfer the local I/O or Modbus device’s data by GPRS by the defined period or DI/AI triggers. The local I/O and GPS data can also be stored in the SD card to become a remote data logger. For another communication path, the GT-540P offers the E-mail mode to transfer the data by E-mail via GPRS for users to choose. The simple I/O linkage function of the GT-540P can reach the real time control in the local field. It also supports Li-ion battery as another power source when the main power is failed temporarily. Therefore, the GT-540P is an ideal solution for environmental monitoring, remote device management and real time vehicle tracking and monitoring systems for M2M applications. Meanwhile, it is supplied with easy-to-use API and OPC server Software that streamline application development process, freeing system integrators from dealing with complex communication protocols of GPRS and the Internet.



ICP DAS provide graphic tool for users to configure GT-540P. The utility also can help users to test GT-540P in the Lab before they apply in the real site.

The M2M RTU center software with friendly Graphic interface is to manage the GPRS RTU products easily. Users can monitor the I/O data and status of GPRS RTU devise by the interface on PC. By using the GPRS RTU API tool and M2M RTU center software, any remote monitoring system can be achieved easily and efficiently. For SCADA system, the M2M.OPC server is provided to connect to SCADA by OPC interface.

| Item | Web site |
| M2M RTU Center | M2M RTU series management software |
| M2M RTU Win32 API | M2M RTU development tool |
| NAPOPC.M2M DA Server | OPC Server for M2M RTU devices |
| EZ Data Logger | The small data logger software of ICP DAS |
| InduSoft SCADA | SCADA software |

| System | |
| CPU | 32 bit, 72 MHz |
| SRAM | 64 Kbytes |
| Flash Memory | 512 Kbytes |
| RTC | Gives time(sec, min, hour) & date, leap year compensation from 1980 to 2079 |
| WDT(watchdog) | Yes |
| SD interface | 2GB max. |
| Serial ports | |
| COM1 | RS-232 : TxD,RxD,GND for configuration |
| COM2 | RS-485 : D2+, D2- |
| Digital Input | |
| Input Channel | 6 |
| Input Type | Sink or Source, Isolated channel with common power or ground |
| Off Voltage Level | +1V max. |
| On Voltage Level | +3.5 ~ 24 VDC |
| Isolated Voltage | 3750Vrms |
| Counters | 6 (16 Bit, 5~40Hz), Min. Pulse Width : 5ms |
| Digital Output | |
| Channels | 2 |
| Output Type | Open-Collector (NPN) (500mA@24VDC) |
| Load Voltage | +24 V max |
| Load Current | 500 mA max |
| Isolated Voltage | 3750Vrms |
| Analog Input | |
| Channels | 1 |
| Resolution | 12 V bit |
| Input Range/Type | 0 ~ 20 mA |
| GSM/GPRS system | |
| GPRS/GSM | Quad-band 850/900/1800/1900 MHz GPRS multi-slot : class 10/8 GPRS mobile station : class B GPRS class 10 : Max download speed 85.6 kbps CSD max speed 14.4 kbps Compliant to GSM phase 2/2+ -Class 4(2W @ 900 MHz) -Class 1(1W @ 1800/1900 MHz) Coding schemes : CS 1, CS 2,CS 3,CS 4 |
| GPS Interface | |
| Support Channels | 32 |
| Sensitivity | Tracking = up to -159 dBm (with external LNA) Cold start = up to -146 dBm (with external LNA) |
| Acquisition Time | Hot start (Open Sky) = 2 s(typical) Cold start (Open Sky) = 36 s(typical) |
| Protocol Support | GPRMC format (NMEA 0183 version 3.01) |
| Power | |
| Protection | Reverse polarity protection |
| Frame Ground Protection | ESD, Surge, EFT, Hi-Pot |
| Required Supply Voltage | +10 VDC ~ +30 VDC with 600 mAh Li-ion battery backup |
| Mechanical | |
| Casing | Plastic |
| Flammability | UL 94V-0 materials |
| Dimensions (W x L x H) | 91 mm x 132 mm x 52 mm |
| Installation | DIN-Rail |
| Environmental | |
| Operating Temperature | -25 ~ +75 |
| Storage Temperature | -40 ~ +80 |
| Ambient Relative Humidity | 5 ~ 95% RH, non-condensing |
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