Product Details

Cellular IoT RTU S270 is a wireless industrial IoT data monitoring and remote control unit, which is an ideal solution for remote data monitoring, data acquisition, remote control, and real time alarm. The RTU features 2 digital inputs, 2 analog inputs, 2 relay outputs, 1 temperature and humidity input.
It is a cost effective IoT solution for Oil, Gas, Water, Weather, River, Flood, Energy, and other automatic monitoring system.

Key Features：

1) ARM® Cortex™-M4 32 Bit RISC Core, RTOS system;

2) Quadband 850/900/1800/1900Mhz GSM GPRS Module inside, 3G UMTS/HSDPA Modules are optional.

3) Widely Rated voltage range, 9~36VDC, Inbuilt large capacity rechargeable backup battery;

4) Large internal memory to save 200 historical records, USB port for configuration and upgrade firmware;

5) 2/4 analog inputs, 12bits resolution, supports 0-5V, 0-20mA, 4-20mA output transducers;

6) 2/4 solid relay outputs, rated capacity is 5A/30VDC,5A/250VAC;

7) 2/4 digital inputs, compatible to dry contact or wet contact inputs. Logic level: 0~0. 5V or short circuit treated as close, +3~30V or open circuits treated as open. One of the input can be used as counter, sampling frequency is 1Khz;

8) 1 temperature & humidity sensor input for monitoring onsite environment, the sensor model is AM2301, Measures temperatures from -40-80°C,0.5°C accuracy, Relative Humidity from 0-99RH%, accuracy is 3%;

9) All of the I/O ports with electromagnetic isolation protection;

10) 2 IP data centers, supports Modbus TCP,TCP/IP protocol over GPRS/3G network;

11) Automatically resend the data while GPRS/3G communication interrupt or failure, GPRS/3G failure will alert by SMS text to users.

12) Supports remotely restart the RTU, and configure& operate it by SMS commands remotely;

13) Supports over voltage protection and phase-reversal protection, provide DC power sources for external transducers or sensors to save wiring cost.

14) 10 SMS Alert and auto dial numbers for receiving alarm message, can program to receive specified alarm message. The authorized numbers also can dial to open the door or turn on/off machine with a free charge call at the specified time.

Technical Parameters：

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/3G Frequency	850/900/1800/1900Mhz/3G (UMTS/HSDPA)
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
Alarm Phone Numbers	10 telephone numbers for SMS Alert and Dial while alarm.
Serial Interfaces	1 USB Port with ±15KV ESD Protection.
Protocols	SMS, GPRS UDP,TCP, Modbus TCP
Digital Inputs	2/4 Digital inputs, dry contact or wet contact. Logic level: 0~0. 5V or short circuit treated as close, +3~30V or open circuits treated as open. One of the input can be used as counter, sampling frequency is 1Khz;
Analog Inputs	2/4 analog inputs, 12bits resolution, supports 0-5V, 0-20mA, 4-20mA output transducers;
Temp.&Hum Inputs	AM2301, Range: Temperature: -40°C to +80°C, Humidity: 0~100%RH;
Relay Outputs	2/4 Solid Relay outputs, Rated Capacity: 5A/30VDC,5A/250VAC
Power Outputs	1 Port, for external device (Transducers or detectors or sensors).
Memory Capacity	Internal Memory inside, can save 200 historical events.
Backup Battery	3.7V 1200mAH, standby 8-16hours.
Temperature range	-10-+70 °C
I/O Isolation	Electromagnetic
Power input/Out	Over voltage protection and phase-reversal protection
Humidity range	Relative humidity 95% (condensation free)
Exterior dimension	168mm113mm26mm(external Maximum size)
Net Weight	1000 g

LED Indicator Definition

Power		RTU status indicator, LED ON when switched RTU on. OFF when switched RTU off.
Alarm		Alarm Indicator, alarm will ON and flick quickly. Normally is OFF;
Arm		Arm/Disarmed Indicator, Arm is ON, disarmed is OFF.
Run		RTU running status indicator, ON or OFF stands for RTU halted, flicks slowly stands for RTU running.
		GSM/3G module indicator. Flicks quickly(less than 1second per time) stands for searching GSM/3G Network or no SIMCard inside or SIMCard connection is not good or cannot register to GSM/3G network successful. Flicks slowly (about 1sencond per time)stands for GSM/GPRS/3G stands for registered successful and GSM/3G Module standby.
Power Connector Definition

DC IN+		External DC Power input port, Connect to 1.5A@9~36V DC power, positive electrode.
DC IN-		External DC Power Input port, contact to negative electrode
DC Out+		Power source output port, positive electrode. Provides power from RTU to external transducers or sensors or detectors. The output voltage and current is the same as the power from DC IN inputs.
DC Out -		Power source output port, Negative electrode.
DIP Switch Definition

For S270, 2 and 3 switches are useless.
SET/RUN		For setting the RTU Mode is in Configuration Mode or Run mode. Switch it to upside is Set Mode, under this mode, the user can use PC Configurator via USB cable to configure the RTU Parameters or Read Parameter settings. Switch it to Downside is Run Mode, under this mode, the RTU is in Running mode.
0/V/mA		The 1^st channel of analog input type switch. If not use this channel then no matter is upside or downside. Switch it to upside stands for the 1^st analog input should connect to 0~5V voltage output transducer. Switch it to Downside stands for the 1^st analog input should connect to 0~20mA or 4~20mA current output transducer.
1/V/mA~3/V/mA		The 2^nd ~4^th channel of analog input type switch. If not use this channel then no matter is upside or downside. Switch it to upside stands for the related analog input should connect to 0~5V voltage output transducer. Switch it to Downside stands for the related analog input should connect to 0~20mA or 4~20mA current output transducer.
Analog Input Definition

Analog inputs, 12bits resolution, supports 0-5V, 0-20mA, 4-20mA output transducers, please refer to abovementioned DIP Switch Definition to connect the correct transducers. For S270, 2+/2- and 3+/3- ports are useless.
0+/0-		The 1st Channel Analog input. + stands for positive electrode, - stands for negative electrode.
1+/1- ~ 3+/3-		The 2^nd ~4^th Channel Analog input. + stands for positive electrode, - stands for negative electrode.
Digital Input Definition

Dry contact or wet contact. Logic level: 0~0. 5V or short circuit treated as close, +3~30V or open circuits treated as open. One of the input can be used as counter, sampling frequency is 1Khz. For S270, 2/3 and GND ports are useless.
0			The 1st digital input, positive electrode.
1~3			The 2^nd ~ 4^th digital input, positive electrode.
GND			GND for digital inputs, negative electrode.
ATN Port Connector Definition
ATN	GSM/3G Antenna connector, 50Ohm, SMA female.
USB Port Connector Definition
USB		USB port, for configuration and upgrading firmware and exporting historical data;
Temperature&Humidity Sensor Port Definitions

T/H		Temperature & Humidity sensor AM2301 inputs. Measurement Range: Temperature: -40°C to +80°C, Humidity: 0~100%RH.
Digital Solid Relay Output Connector Definition

Solid Relay inside for outputs, Rated Capacity: 5A/30VDC,5A/250VAC. For S270, 2+/2- and /3+/3- ports are useless.
0+/0-		The 1st Channel Solid Relay Output. + stands for positive electrode, - stands for negative electrode.
1+/1- ~ 3+/3-		The 2^nd ~ 4^th Channel Solid Relay Output. + stands for positive electrode, - stands for negative electrode.

Model	GSM/3G	Precision	DIN	AIN	PT100	DO	T/H	Register	Record	Port
S270	V	12bit	2	2	0	2	1	X	200	USB