King Pigeon GSM GPRS M2M DTU Data Logger S240 with Modbus RS232 RS485 RTU

>>Quad-band Siemens MC55i GPRS Module and High-density Performance Line ARM 32-bit MCU Inside
>>Direct Connection to the GSM GPRS Network
>>Transparent Serial Data Tunneling using Low Cost SMS/GPRS Network
>>Remote Configuration by SMS Messages or GPRS
>>Upload Data via GPRS or SMS on Schedule or Event Occurs
>>Support Dynamic Domain Name or Static IP address
>>Support SMS, GPRS UDP and TCP Protocol
>>Support Modbus RTU Protocol
>>USB/RS232/RS485 Serial Port
>>6 Opto-isolated Digital Inputs can be Programmed to NC/NO/Edge/Level Type by Switch
>>Passive Contact Type and Active Contact (3~24VDC) Type can be Programmed by DIP switch
>>DIN1 and DIN2 are Completely Isolated
>>When Alarm Occurs can Send Alarming Messages or Auto Dial the Preset Phone Numbers
>>6 digital inputs can be used as Pulse Counters;
>>4 Digital Relay Outputs can be Programmed as Dial to Switch ON/OFF with Free Communication Fee Alarm-linkage and Schedule to Action,also can be Send SMS to Switch ON/OFF
>>10 Analog Inputs(12 bit Resolution, 0-5V or 0-20mA)
>>2 Thermometer Inputs for DS18B20, Measures Temperatures From -55°C to +125°C. (Fahrenheit equivalent is -67°F to +257°F)±0.5°C 
>>4 Power Source Outputs for External Device
>>Support 1 SMS Center Number and 1 IP address or 1 Dynamic Domain name
>>MTBF(Mean Time Between Failure) up to 2Years
>>User Friendly PC Programming Interface
>>More Protocols can be Updated by User through USB Port with the Updated Firmware
>>Power supply 9V to 24V(Recommend 12VDC).