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IP Relay Board 8 Channels - Web, TCP/IP, Telnet, HTTP API, E-mails

Internet/Ethernet 8 Channel Relay Board - Web, TCP/IP, Telnet, HTTP API, E-mails

This is Internet/Ethernet 8 channel SPDT relay module (board) for remote management and control with Virtual Serial Port, TCP/IP, Web, HTTP API, Telnet and serial commands access. It has 8 SPDT Relays, 8 digital inputs (0-3.3V), 8 analog inputs (0-2.5V) and one UART port. Inputs can be adjusted to control relays (standalone work). Also inputs of one controller can control outputs of another over the LAN/WAN (box-to-box mode). It can send E-mails on inputs change as well. Suitable for remote control, home automation, data acquisition, sensor processing, alarm systems, PLC applications. Now with FREE Android and iOS App!

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Kit specifications

  • 10/100 Mbit Ethernet interface with Link Led. Auto MDIX
  • UART interface for RS232/RS485 serial connection with other such controllers. UART can be used also for configuration of the parameters
  • Power supply: 12VDC / 400mA
  • 8 SPDT Relay channels - selectable by user:
    • JQC-3FC/T73 (7A / 250VAC, 10A / 125VAC, 12A / 120VAC, 10A / 28VDC)
    • RAS-12-15 (10A / 250VAC, 15A / 120VAC, 15A / 24VDC)
  • 1 x 8 digital inputs. Levels: 0-12V
  • 1 x 8 analog inputs. Referent voltage: 2.5 V, resolution: 10 bits, input range: 0-10V
  • On boot the outputs are set with states before reset
  • Built in RTC (Real Time Clock). It can be synchronized via NTP manually or automatically each 6 hours
  • Capacitor power backup keeps time for days during power failure
  • Virtual Serial Port - it may be accessed with Serial RS232 commands over TCP/IP network
  • Integrated WEB server with password and features like Ajax parameters reading
  • Telnet commands
  • HTTP API commands
  • TCP/IP ASCII protocol with optional RC4 encryption
  • All the network ports can be defined by the user
  • Supports ICMP (ping)
  • 19 modes for I/O lines such as inverting, timer, pulses, setting output via input and switch ON/OFF according particular time (scheduling)
  • Any input may be referred to control any output of this or another controller in the TCP/IP network
  • Linearization for the analog inputs
  • Box-to-Box (distributed) mode
  • SMTP with authentication (SSL is not supported)
  • E-mail notifications for various events
  • IP address protection
  • Power and status led
  • DAEnetIP3 documentation: DAEnetIP3 user's manual  

It is possible functions by customer's request to be created - for example web pages modification, put Logo and company name (OEM) ...


After purchase you will receive

  • 1 x DAEnetIP3 - ET Ethernet controller - user manual DAEnetIP3_UM.pdf
  • 1 x 8 Output Channel Relay Board - link
  • 1 x Flat ribbon labeled cabel
  • 3 x plastic spacers
  • DRM Software - Denkovi Relay Manager Software. The software is available for download from this link - setup.exe



Application examples

  • Remote electrical devices control
  • Sensor information processing (temperature, humidity, distance...)
  • Management/monitoring for industrial
  • It may be used for simple standalone web based thermostat
  • Remote Lock/unlock doors
  • Home automation
  • Alram applications
  • Standalone PLC applications
  • Controlling another such device over the LAN/WAN without PC (Box-To-Box)



Power Supply

Please pay attention that:

  • The middle pin of the power jack is +12VDC
  • There is not protection against reverse voltage.
  • We recommend to use power supply adaptor that outputs 12 VDC stabilized.
  • Inproper power supply voltage will damage the device!


We recommend to use this 12VDC Power Supply Adaptor (SYS1357-2412) that may be found also in our store. Please contact with us if you have questions. We sell the adaptor with one of the AC plugs for: USA, UK, EU, AUS. It is sold separately !



Bellow is given shortcut for instructions how to connect the device DAE-RB/Ro8-12V + DAEnetIP3-ET or only DAEnetIP3 - EX for first time to router with UTP cable. In the user's manual are shown the rest connection types.

  1. Connect DAEnetIP3 RJ45 port with UTP (doesn’t matter crossover or straight) cable.
  2. Connect PC with the other side of the UTP cable.
  3. Change the IP of the PC. It may be for example (DAEnetIP3 is with
  4. Supply DAEnetIP3 with power supply 12 VDC (the middle pin of DAEnetIP3 power jack is +12VDC). The power led (with red color) must be on.
  5. Open your browser (IE, Firefox, Opera) and type in the address bar.
  6. Use admin for password.
  7. Open admin settings.
  8. Change the Eth IP address of DAEnetIP3. Make it to be in one network with your router and PC. For example if your router is with IP and PC with, make DAEnetIP3 with Eth mask must be and Eth gateway (router IP)
  9. Click “Save” button.
  10. Unplug the power supply.
  11. Disconnect the UTP cable from PC and connect it to the router.
  12. Supply again the DAEnetIP3
  13. Open browser and type
  14. Now you may access the DAEnetIP3 controller with router via router from PC.


Typical connection of the device





16 x Digital outputs

DAEnetIP3 has 16 digital outputs working in 19 different modes. However the relay board has only 8 relay outputs. So to set the relays you need to change PortA.0 - PortA.7. Relay1 is connected to PortA.0, Relay8 to PortA.7. On the PCB this is marked as PortA_1. When the output level is 0, the relay is OFF. When it is 1, the relays is ON.



8 x Digital outputs

DAEnetIP3 has 8 digital inputs. They work with +3.3V logic (Low level is 0V, high level is 3.3V). They work in 3 different modes. When the controller digital inputs pins are not connected the pins are in high level (there is connected pull up resistor 10K to each digital input). The input may be tracked only, may control some PortA digital output (this means the relay board also) by rising/falling edge or it may control even output from another DAEnetIP3 controller (connected in the same Ethernet network).




8 x Analog inputs

DAEnetIP3 has 8 analog inputs with 2.5 VDC reference voltage source and 1024 bit resolution.

The input may be tracked only, may control some PortA digital output (this means the relay board also) by crossing threshold or it may control even output from another DAEnetIP3 controller (connected in the same Ethernet network).

It is possible also each analog input to be linearized (i.e. to be retreived directly desirable units).



Access via Virtual Serial Port

DAEnetIP3 and all devices that are based on it may be accessed/controlled via Virtual Serial Port. In other words the the device in this auction may be accessed via COM Port RS232 commands from your computer because it will apear as COM Port:

  • DAEnetIP3 appears as VSP (COM Port) on your PC
  • It may be accessed with any Serial Terminal (for exaple HyperTerminal)
  • The only thing the user has to do is to send and receive commands via the COM Port. All the TCP/IP commnucation is done by the driver.
  • There is not matter if your DAEnetIP3 device is connected to your PC over LAN cable or Wireless Wi-Fi network, it will appear as VSP (COM Port) on your PC. You need to set only the proper IP, Port and COM Port Name.





Example commands and responses that are sent/received via the DAEnetIP3 VSP (COM Port). The serial address of DAEnetIP3 is 00.

  • Get Digital Input 1 level (Din1), counting in the commands is zero based:
    • Send: 00BV0=?;
    • Receive: 00BV0=0; //The level is low
  • Get Analog Input 1 level (Ain1), counting in the commands is zero based:
    • Send: 00CV0=?;
    • Receive: 00CV0=512;
  • Set Digital Output 12 (Do12) in High level, counting in the commands is zero based:
    • Send: 00ASB=1;
    • Receive: 00ASB=1;
  • Get the Ethernet IP address of the module:
    • Send: 00MIP=?;
    • Receive: 00MIP=;

All the commands are described in the  DAEnetIP3 user's manual


Access DAEnetIP3 from mobile devices

iOS App DAE-iModules


DAE-iModules DAE-iModules DAE-iModules DAE-iModules DAE-iModules


Android App DAE-aModules

Android app on Google Play




The video bellow shows how you can control DAEnetIP3 based device - Wi-Fi 12 Relay Module. Any other Denkovi Ethernet Device from this list can be acessed with same success from your iOS device via DAE-iModules





Here it is shwon video how to set-up the android application by iSwitch, LLC with DAEnetIP3:




Some useful information about DAE-iModules and DAE-aModules and DAEnetIP3:

  • Select device DAEnetIP3. Enter the IP, HTTP Port and web password for the device
  • Tab "Other inputs" contains the analog input values for the hardware linearization (by DAEnetIP3) while tab "Analog Inputs" shows their original values
  • To connect and scale the analog inputs with sensors, please refer to this link:



Access via DAEnetIP3 Manager

A free utility for all DAEnetIP3 based modules for controling, configuration, monitoring and log all the DAEnetIP3 parameters.

Download and documentation - here


Access via DAEnetIP3 Command Line Tool

Windows/Linux/osX command line tool create especially for DAEnetIP3. It allows easy integration of the DAEnetIP3 into third parity software, control from command promt, control from bat files, from bash scripts, from shortcut and others. For more info and download here:


Access via DRM Software

The device is supported by DRM Software. DRM Software is Windows/Linux software for controlling all our relay boards. Supported OS:

Windows: tested on XP, Vista, 7 and 8

Linux: tested on Ubuntu and OpenSuse


Denkovi Relay Manager Software (DRM Software)

DRM Software image - control mode for Ethernet TCP/IP Eight Channel Relay Board



For more information about DRM Software, documentation and download - here

Download the last version (install package) - DRMsetup.exe

Download the last version (intstall archive) - DRMsetup.rar



Access via Web

DAEnetIP3 has built-in web server for configuration. All the parameters can be accessed via web browsers like Mozilla, IE and Opera. The pages for I/O ports are refreshed automatically. In this way it is possible to track all the I/O states in real time without manually refreshing the page. The web browser must support JavaScript.
The page below the text shows the page for the analog inputs. Their states are automaticaly refreshed each 2-3 seconds. The user doesn't have to click refresh button each time but just tracks the I/O changing values almost in real time (Ajax).



Access via HTTP API commands

Bellow are shown example commands. Please note that there is HTTP API password (by default it is admin) to prevent unauthorized access. 

Example commands:

send: http://your.ip.address/command.html?P=admin&ASG=?& (get the whole PortA status of DAEnetIP3)

receive: <!DOCTYPE html><html><body>ASG=0F0F;</body></html>


send:http://your.ip.address/command.html?P=admin&ASG=?&BVG=?&CV0=?& (send several commands at a time)

receive: <!DOCTYPE html><html><body>ASG=FFFF;BVG=0F;CV0=12;</body></html>



Access via Telnet

DAEnetIP3 can be easily accessed via Telnet. Simple password protection mechanizm is provided. Note that Telnet is not secure protocol, so it is recommend using only in secure networks.

On the figure right to the text is shown how DAEnetIP3 controller with IP address is accessed via Telnet with Windows XP.

  • Open command line and type: telnet "Controller IP"
  • Use the passowrd, in our case this is admin. After correct login the controller responds with welcome message.
  • The first command is ASG=0000; - it sets all 16 DO in low level.
  • CV0=?; gets the ADC channel 0 value. Its 415; It may be from 0 up to 1023.
  • BVG=?; gets the eight digital inputs levels. Its 00, which means all inputs are in low level
  • ASG=FFFF; Sets all the 16 DO in high level.

Ofcourse these commands are only small part. The full list may be found in the documentation.

Wi-Fi IEEE 802.11 b/g DAQ TCP/IP controller - Telnet / command line



Access via Serial Line (UART or RS485)

Each DAEnetIP3 controller may be accessed via UART serial communication. The protocol is given in the documentation. This is provided in case you need RS485 network for example accessed only with one IP address. Each controller has serial address, that is given in each packet sent to the server bridge from user software. The figure below to the text shows how 3 DAEnetIP3 controllers are connected in serial network using UART <-> RS485 convertors (not included in the auction). The serial network may be accessed over LAN, WLAN or WAN with user TCP/IP socket based software.

Wi-Fi IEEE 802.11 b/g DAQ TCP/IP controller - Serial (UART) access

Access via TCP/IP socket

DAEnetIP3 controller has possibility for access via TCP/IP socket. The user may connect with custom software to port that is defined for socket based TCP/IP communication.
The protocol is not based on some standart, but it is developed especially for the DAEnetIP3 controller. The full description of the protocol may be found in the user manual.
The reason for creating such communiation way is that TCP/IP sockets are widely used in all programing languages.In this way you may create software for DAEnetIP3 without learning difficult and heavy protocols.
The controller supports RC4 encryption/decription for the TCP/IP socket comunication. This is security measure that gives you basic protection.
Another security option is IP address protection, that allows only one IP to access the DAEnetIP3 via Web, Socket and Telnet.



More videos


Demo video - DRM Software and Ethernet TCP/IP Eight Channel Relay Board




Denkovi software

  • DAE-iModules - App for iOS mobile devices, support link here
  • DAE-aModules - App for Android mobile devices, support link here
  • DAEnetIP3 Manager - here
  • DRM Software - software for controlling relays - here
  • DAEnetIP3 Command Line Tool - here


Third parity software



Please note that TFTP firmware upgrade is not anymore supported. From our experience we don't recommend to use it because it is unsafe and can damage your DAEnetIP3 controller.

Date Version Notes
 6 Oct 2013


New features and bug-fixing list: here. The controller will be shipped with this version.
Sep 2011 1.0.0 The initial release (documentation for 1.0.0 version)



Software examples

  • LabVIEW 2011 -  Example how to set/get the DAEnetIP3 I/O status via HTTP GET requests. The code is not public, but a download link will be sent to your email after purchase.
  • VB .NET Express 2010 (screenshot) - Example how to access DAEnetIP3 via Virtual Com Port (VCP). There is tutorial how to do this - here. The executable file is here.
  • C# .NET Express 2010 - Example how to access DAEnetIP3 via HTTP GET commands.
  • Visual Basic 6 (screenshot) - Example how to acess the I/O lines (does not include RC4) - download.
  • Borlnad C++ Builder 6 (screenshot) - Example how to acess the I/O lines (does not include RC4) - download.
  • Java (using TCP/IP sockets) - Example how to acess the I/O lines (does not include RC4) - download.
  • Java (using HTTP/API) - Example how to acess the I/O lines (does not include RC4) - download.


by Laura, 21 Mar 2013

Too many compliments too ltilte space, thanks!

We accept





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