The GSM M2M RTU S270 is a remote terminal unit, special for remote monitoring and remote control. The RTU integrated industrial GPRS Module inside, it supports voice, SMS, and GPRS communications. Moreover, it integrated USB port for programming by user friendly PC software and upgrade firmware.
The GSM M2M RTU is a multi I/O port remote terminal unit. It is special for BTS monitoring, remote data acquisition, telemetrically, BTS access control and other applications. It supports voice communication, SMS, GPRS communications.
The GSM M2M RTU can be used as remote access control; the authorized users can open the gate or turn on the machine with a free charge call at specified time.
The GSM M2M RTU supports Modbus TCP, TCP/UDP protocol, transparent data transmission over GPRS, performs as Modbus Slave.
S27x GSM 3G RTU M2M Automation Table
Model | Details | 3G | Precision | DIN | AIN | PT100 | DO | Register | Record | Port | S270 | More | V | 12bit | 2 | 2 | 0 | 2 | X | 200 | USB | S271 | More | V | 12bit | 4 | 4 | 0 | 4 | X | 200 | S271-PT | More | V | 12bit | 4 | 0 | 4 | 4 | X | 200 | USB | S271-PTA | More | V | 12bit | 4 | 2 | 2 | 4 | X | 200 | USB | S272 | More | V | 12bit | 8 | 6 | 0 | 4 | X | SD | USB/RS232/RS485 | S273 | More | V | 12bit | 8 | 6 | 0 | 4 | 64 | SD | S274 | More | Reserved | S275 | More | V | 16bit | 8 | 6 | 0 | 4 | 64 | SD | USB/RS232/RS485/RJ45 | Notice |
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| 1. *C stands for inbuilt module is CDMA2000. *W stands for inbuilt module is WCDMA. 2. All of them support 1 temperature and 1 humidity inputs for environment monitoring.
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Item | Reference Scope | DC Power supply | Standard adapter: DC 12V/1.5A Range 9-36VDC | Power consumption | Standby:12V/70mA; Working Max.: 12V/300mA | GSM Frequency | 850/900/1800/1900Mhz | Transmit power | Class 4 (2W) at EGSM 900 and EGSM 850 Class 1 (1W) at GSM 1800 and GSM 1900 | GPRS connectivity | GPRS multi-slot class 10 | GPRS Data Transmission | GPRS data downlink transfer: max. 85.6 kbps GPRS data uplink transfer: max. 42.8 kbps Coding scheme: CS-1, CS-2, CS-3 and CS-4 | TCP/IP stack | TCP,UDP | SIM interface | Supporting 3V SIM Card | External antenna | SMA Antenna interface, 50 Ohm | Serial Interfaces | 1 USB Port; | Protocols | SMS, GPRS UDP,TCP, Modbus RTU, Modbus TCP and more equipment protocols can be added according to requirements. | Digital Inputs | 2 Digital input, NC/NO/Edge/Level type, Can be used as Pulse Counters; | Analog Inputs | 2 Analog Inputs. 12 bit resolution, 0-5V or 0-20mA or 4-20mA; | Temp.&Humi Inputs | Temperature range: -40°C to +80°C. Humidity Range: 0~100%RH; | Relay Outputs | 2, Rated: 5A/30VDC,5A/250VAC | Power Outputs | 1 Port, for external device; | Memory Capacity | Internal Memory inside, can save the data for 1000events. | Backup Battery | 3.7V 1200mAH | Temperature range | -10-+70 °C | Humidity range | Relative humidity 95% (condensation free) | Exterior dimension | 168mm*113mm*32.3mm | Net Weight | 1000 g |
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