The WERNER ZUGIG WN0525/WN0526 is a multi I/O port remote terminal unit, through the RS232/485 port can connect intelligent meters or PLC. It is specifically designed for EMS monitoring, remote data acquisition, telemetrically, EMS access control and other applications. It supports SMS and GPRS.


  • Widely Rated voltage range, 9~36VDC.
  • Support 3G, 4G Networks & Email Alarm notification.
  • Standard 6 analog inputs, 12bits, support 0-5V, 0-20mA & 4-20mA. Expandable upto 64 analog inputs.
  • Standard 4 Relay outputs, 5A/30 VDC ,5A/250VAC. Expandable up to 64 Relay outputs.
  • Standard 8 digital inputs, dry contact or level input. Expandable up to 64 digital inputs.
  • 1 temperature probe input, 1 humidity transducer input;
  • Automatically resend the data while communication failure, GPRS failure will alert by SMS text;
  • Supports remotely restart the RTU, and configure it by SMS commands remotely;
  • 10 SMS Alert and auto dial numbers, can program to receive specified alarm message.

The WN0525 can be used as remote access control; the authorized users can open the gate or turn on the machine at a specified time.

It supports Modbus TCP, TCP/UDP protocol, transparent data transmission over GPRS, performs as Modbus Slave.

Typical Application

Application Diagram


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
No. of Digital Inputs 8 Digital input, NC/NO/Edge/Level type, can be used as Pulse Counters. Expandable up to 64 digital inputs.
No. of Analog  Inputs 6 Analog Inputs. 12-bit resolution, 0-5V or 0-20mA or 4-20mA. Expandable up to 64 analog inputs.
No. of Relay Outputs 4 no. of Rated: 5A/30VDC, 5A/250VAC. Expandable up to 64 Relay outputs.
No. of Configurable Mobile number 10 Mobile Phones numbers
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
Security Password protected access
Real Time Clock Date time with battery backup
I/O Status Remote I/O query through SMS
SIM interface Supports 4G SIM Card
Indicators Power, Signal Low, Alarm status, Armed & RS232 communication.
External antenna SMA Antenna interface, 50 Ohm
Serial Interfaces 1 USB Port;
Protocols SMS, EMAIL, GPRS UDP, TCP, Modbus RTU, Modbus TCP and more equipment protocols can be added according to requirements.
RS232/485 1 RS232 and 1 RS485, Support Transparent transmission.
Temperature & Humidity Inputs Temperature range: -40°C to +80°C. / Humidity Range: 0~100%RH;
System Health Check Remote by SMS & Auto by specify timing / date
Power Outputs 1 Port, for external device;
Memory Capacity Internal Memory inside, can save the data for 255 events.
Backup Battery 3.7V 1200mAH (Optional)
Temperature range -10-+70οC
Humidity range Relative humidity 95% (condensation free)
Exterior dimension 168mm*113mm*32.3mm
Net Weight 1000 g

User Friendly Configuration Software

Optional HMI Industrial Display Panel

Reference Site Installation

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