S275
Remote Control
Combination
Wired
Continuous
Automatic Control, Monitoring, Measurement
RoHS, ISO: 9001, CE
New
Customized
8 Channel
6 Channel
4 Channel
1CH RS485
1CH
Modbus RTU, Modbus TCP, Mqtt
DC 9-36V
4G
SMS Alert, SMS Set, SMS Inquiry, SMS Command
10 SMS Alarm Numbers Can Be Added
Remote Configuration
Street lights control
Water leakage monitoring
M2m Telemetry Control
Sms Temperature Alarm
BLIIoT
Box
108x82x40mm
China
8531100000
Product Description

Model | DI | AI | DO | Tem& Hum | Storage | USB | RS485 | I/O data points | |||
bool | 16Bit | 32Bit | 64Bit | ||||||||
S270 | 2 | 2 | 2 | 1 | 2M | 1 | x | x | x | x | x |
S271 | 4 | 4 | 4 | 1 | 2M | 1 | x | x | x | x | x |
S272 | 8 | 6 | 4 | 1 | 32G | 1 | 1 | 64 | 64 | x | x |
S274 | 4 | x | 4 | 1 | 32G | 1 | 1 | 64 | 128 | 64 | 64 |
S275 | 8 | 6 | 4 | 1 | 32G | 1 | 1 | 64 | 128 | 64 | 64 |

The Industrial 4G Wireless Cellular RTU S275 features 8 digital inputs, 6 analog inputs, 4 relay outputs, 1 temperature and humidity input, and 1 RS485 serial port. The RTU supports Modbus RTU over TCP, Modbus TCP, MQTT protocol.
The remote monitoring module is designed for remote measurement and control system and remote data acquisition telemetry systems, such as smoke, liquid, water, flow, flood, electricity, power, energy remote monitoring and remote control.
The remote monitoring module is designed for remote measurement and control system and remote data acquisition telemetry systems, such as smoke, liquid, water, flow, flood, electricity, power, energy remote monitoring and remote control.
Inbuilt inter-lock logic programmer and powerful timer program function;
When alarm occurs, the RTU will notify users by SMS, dialing, and also uploading data to cloud platform, monitoring center. The RTU also can be used as a remote switch, remote I/O, remote smart PLC, timer switches.
When alarm occurs, the RTU will notify users by SMS, dialing, and also uploading data to cloud platform, monitoring center. The RTU also can be used as a remote switch, remote I/O, remote smart PLC, timer switches.


The RTU supports BLIIoT IoT RTU protocol, Modbus RTU over TCP protocol, Modbus TCP protocol, MQTT protocol, which can communicate directly with the server, cloud platform or SCADA.


Category | Parameter | Description |
Power | Input Voltage | DC 9~36V |
Power Consumption | Normal: 50mA@12V, Max: 150mA@12V | |
Output | 1 Channel; Voltage: 9~36V DC; Current: 1500mA@12V(Max) | |
Protection | Reverse wiring prevention; ESD Air: 15KV; Surge: 4KV | |
Backup Battery | 3.7V/850mA (It is optional. Default: Without battery) | |
USB | USB | 1xMini USB |
Serial Port | QTY | 1xRS485 |
Baud Rate | 1200bps-115200bps | |
Data Bit | 8 | |
Parity Bit | None, Even, Odd | |
Stop Bit | 1, 2 | |
Protocol | Modbus RTU(slave), Modbus RTU(master) | |
Protection | ESD Contact: 8KV; Surge: 4KV(8/20us) | |
Digital Input | QTY | 8 Channel |
Type | Support both Wet contact and Dry contact | |
Dry Contact | Close: Short circuit; Open: Open circuits | |
Wet Contact | Close: 10~30V; Open: 0~3V | |
Others | DIN0 as a high-speed pulse counter, sampling frequency: 1MHz; DIN1~3 as low-speed pulse counter, anti-shake time can be set 1~2000ms, default 1ms; DIN1 with arm and disarm function; | |
Protection | 2KVrms | |
Digital Output | QTY | 4 Channel |
Type | Relay output (5A@30VDC, 5A@250VAC) | |
Others | The first DO can set time to control by authorize number; Custom setting close and open times | |
Protection | 2KVrms | |
Analog Input | QTY | 6 Channel |
Type | Differential Input, 4-20mA/0-20mA/0-5V | |
Resolution | 12Bit | |
Accuracy | ±0.1% FSR @ 25°C ±0.3% FSR @ -10 and 60°C ±0.5% FSR @ -40 and 75°C | |
Sampling Rate | 200ms | |
Input Impedance | >1M ohms | |
Temperature&Humidity (AM2301) | Resolution | 16bit(0.1%RH, 0.1°C) |
Sampling Rate | 200ms | |
Temperature Range | -40 to +80°C | |
Accuracy | 0.5°C | |
Humidity Range | 0 to 99RH% | |
Accuracy | 3%RH | |
4G | SIM | Drawer type, Support 1.8V/3V SIM/UIM card, Built-in 15KV ESD protection |
SIM Slot | 1 | |
Software | Internet Protocol | IPV4, TCP/UDP, Modbus RTU, Modbus TCP, MQTT, BLIIoT IoT RTU |
Indicator | 4G signal, running, arming and disarming, 485 transmit-receive | |
Configuration | PC software configuration, support WIN XP, WIN 7, WIN 8 and WIN 10 | |
Slave Connection | 16 devices, Max 320 I/O data points(Bool, 16bit, 32bit, 64bit) | |
Transparent Transmission | Support | |
SMS Command | Support | |
Login Package | Support custom login package | |
Heartbeat Package | Support custom heartbeat package | |
Storage | Built in 32G SD card, capable of storing up to 100,000 historical records | |
Safety | MTBF | ≥100,000 hours |
EMC | EN 55022: 2006/A1: 2007 (CE &RE) Class B | |
IEC 61000-4-2 (ESD) Level 4 | ||
IEC 61000-4-3 (RS) Level 4 | ||
IEC 61000-4-4 (EFT) Level 4 | ||
IEC 61000-4-5 (Surge)Level 3 | ||
IEC 61000-4-6 (CS)Level 4 | ||
IEC 61000-4-8 (M/S) Level 4 | ||
Others | CE, FCC, RoHS | |
Environment | Working | -45~85°C, 5~95% RH |
Storage | -45~105°C, 5~95% RH | |
Others | Shell | Metal |
Size | 108x82x40mm | |
Protection | IP30 | |
Installation | Wall-mounting or DIN Rail mounting. |


