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Shenzhen Instantware Information Technology Co., Ltd.

GPRS SMS Command Ethernet RTU GSM Remote Monitoring Security Alarm System

GPRS SMS Command Ethernet RTU GSM Remote Monitoring Security Alarm System

Product Details:

Place of Origin: China
Brand Name: INST
Certification: CE ROHS ISO CCC
Model Number: M3D4

Payment & Shipping Terms:

Minimum Order Quantity: accept sample order
Price: negotiated
Packaging Details: paper box
Delivery Time: 5~8 work days for sample
Supply Ability: 5000sets/month
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Detailed Product Description
Memory Card: SD/TF Package: Master Carton
SIM Card: Supporting 3V SIM Card Temperature Range: -40°C ~ +80 °C
Exterior Dimension: 210x145x33mm Communication Interface: RS-232/RS485/USB
Output Drive Voltage: Equal To Input DC Voltage

GPRS SMS command GSM remote monitoring security alarm system ethernet RTU


Product Introduction
INST--RTU series products are the wireless remote control terminal. It Can be directly connected to the standard sensors output analog signals ,various level signals, dry contacts, pulse signals, etc. It can be used as the master station of industrial Modbus-RTU protocol to connect the various
instrumentation of Modbus-RTU protocol(customized).It's the best way for the small-scale
process signal to implement wireless monitoring and control. The internal adopts the STM32 series high-performance ARM controller chip from the industry-leading STMicroelectronics company and combines the industrial wireless communication module from Quectel company, RTU has the characteristics of strong stability, high reliability, real-time, and wide application. 


Stability and Reliability
•Support hardware and software WDT
•Support auto recovery mechanism, including online detect, auto redial when offline to make it always online
•RS232/RS485/RS422 port: 15KV ESD protection
•SIM/UIM port: 15KV ESD protection
•Power port: reverse-voltage and overvoltage protection
•Antenna port: lightning protection(optional)


Design for Industrial Application
•High-powered industrial cellular module
•High-powered industrial 32 bits CPU
•Support low power consumption mode, including multi-sleep and trigger modes to reduce the power dissipation farthest
•Embedded Real Time Clock(RTC) circuit which can realize timing online/offline function
•Housing: iron, providing IP30 protection.
•Power range: DC 5~35V


Performance Parameter
Item Technical Parameters
GPRS Module Industrial GPRS wireless module, frequency range850/900/1800/1900MHz
GPS Module Level accuracy:2.5m Space accuracy:0.1m/s
Heading accuracy:0.5° Cold start time:≤30s
Hot start time:≤1s serial port communication
WIFI WIFI function module, serial port communication
Lora Lora function module, serial port communication
ZigBee ZigBee function module, serial port communication
Serial port 2RS-232,1RS-4852,communication speed :1200bps~115200bps
Power input range 9-24V,power output including 12V/2.5A,4V/2.5A, 3.3V/2.5A
Power voltage
Can collect the external supply voltage and the internal standby supply
Analog input 4 channels;External signal range:0~5V or 4~20mA;Acquisition accuracy12
bits (1mV or 5uA),the acquisition circuit can be configured as voltage mode
or current mode via wire jumper or resistor
Digital input 4 channel, can be configured as active or passive input via resistor,
adopting interrupt I/O port, can collect the level and pulse signal
Digital output 4 channels, can be configured as the relay output mode or transistor
output mode via wire jumper, the max load are respectively (10A/250V AC)
and (500mA/12V DC)
Data storage Can store historical data and real-time data,possess8MB serial FLASH, can
be expanded to 16MB and 32MB,possess256KB serial FRAM
Micro SD Card Can external connect TF card, support FAT32 file system
Real-time clock Adopting high precision clock chip, the error does not exceed 5 seconds /
year, ensuring 3 years operating under the case of power down for the
back-up battery .
Power dissipation Data doesn't transmit state≤60mA
Data transmitting state≤100mA


DC Power supply 9-28V DC (Standard adapter: DC 12V/24V/1.5A)
Power consumption 2V/24V input Max. 150mA/Average 50mA
GSM Frequency range Quad-frequency 900/1800/850/1900MHz
SIM Card Supporting 3V SIM Card
Antenna 50 Ω SMA Antenna interface
Memory card SD/TF
GPS Antenna external
Communication interface RS-232/RS485/USB
Temperature range -40°C ~ +80 °C
Humidity range Relative humidity 95%
Digital input 4 Digital inputs (dry contact,wet contact is option)
Digital Output 4 Drivable relay outputs (open-collector outputs
Analog Input 4 analog inputs(4~20mA or 0~5V)
Output drive voltage Equal to input DC voltage
Output drive power Drive voltage ≤35V, drive current ≤500mA
Exterior dimension 210x145x33mm



1. Oil and gas pipelines;
2. Corrosion protection
3. Temperatures, water leakage applications;
4. Wellheads, boat, vehicle;
5. Energy saving, street lights control system;
6. Valve controls;
7. Transformer stations;
8. Unmanned machine rooms;
9. Control room application;
10. Automation System, M2M;
11. Security Alarm System applications;
12. Supervision and monitoring alarm systems;
13. Automatic monitoring system;
14. Vending Machines security protection;
15. Pumping Stations, Tanks, Oil or Water levels;
16. Buildings and Real Estate;
17. Weather Stations;
18. River Monitoring and Flood Control;


Contact Details
Shenzhen Instantware Information Technology Co., Ltd.

Contact Person: Cara

Tel: +8615889726095

Send your inquiry directly to us (0 / 3000)

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