1 Relay Module, 12V/7A, Terminal Block Connector



10 days
84 item(s)

Our quantity discounts:

Quantity  5+   10+   25+ 
Price  USD7.61   USD7.10   USD6.45 


Important! Note "Header Type" Option above for selecting pin header! See "Pin Headers" section below for details.

The im1RL has a single 12V, 7V Relay with relay driving circuitry. The relays can be controlled by 3.3V or 5V logic, making it suitable for any of our Modtronix boards, Arduino, AVR, Microchip PIC or nearly any other project that requires a relay.

This module is designed and manufactured by Modtronix! Only high quality components from reputable suppliers are used! This is NOT a cheap module using no-name components! See "High Quality Components" section below for component details.

It makes the 3 relay outputs (common, normally open, normally closed) available via a 5.0mm Terminal Block connector. The center pin of the connector is common, left (viewing connector from the front) is "normally closed", and the right "normally open". They are also marked on the PCB with symbols.

This board is part of our iMod product range, and can very easily be added to any of our products that have iMod ports. When mounted in an iMod port, the relay is controlled by iMod pin 2. Click here for a list of Netcruzer boards that have iMod ports.

Top View

Bottom View


Schematics (pdf format)

Click to enlarge

The im1R has two rows of standard 2.54mm (0.1") pin headers. The rows are 0.7" apart, allowing this module to be mounted on a breadboard or standard 0.1" grid prototype board. The picture to the right shows some iMod modules mounted on a standard prototype board.

The pin headers supplied or soldered to this board are selected in the "Header Type" option at the top of this page.



  • One 12V, 7A high quality relay
  • Relay driving and diode protection circuitry
  • High quality, 3.5mm terminal block connector
  • Pin Header connectors are gold plated for best possible contact
  • Module dimension: 24.8mm x 22.2mm (0.975" x 0.875")
  • RoHS Compliant

Pin Headers


Code Examples

Using with Netcruzer boards that have iMod ports

Many of our Netcruzer boards have iMod ports. This board can be plugged into any available iMod port. The relay is controlled by setting pin 2 of the iMod port. The following is some sample code showing how to turn the relay on and off if this module is mounted in iMod port 1.

imod1_ConfDirPin2(OUTPUT_PIN);  //Configure pin 2 of iMod 1 as an output
imod1_WritePin2(1);             //Set pin 2 of iMod 1 - Turn relay on
imod1_WritePin2(0);             //Clear pin 2 of iMod 1 - Turn relay off

Demo Projects
For getting started quickly using this module with our Netcruzer boards, download and modify (as required) a demo project. On our demo project page, have a look at the iMod demo projects for examples on how to use this module with Netcruzer boards that have iMod ports.

High Quality Components

This module is designed and manufactured by Modtronix! Only high quality components from reputable suppliers are used! All components have been selected to exceed the maximum rated specifications. The following components are used:

  • Relay: 12V, 5A Relay. Manufacturer is either NCR, Hongfa, Hsinda, Songle, Goodsky or Toward.
  • Transistor: 100mA Digital Transistor. Manufacturer is either Infineon, NXP Semiconductors, Micro Commercial, Diodes Inc or Rohm
  • Diode: Dual diode, common anode, 150mA, 90V. Manufacturer is either ON Semiconductors, NXP Semiconductors, Micro Commercial or Diodes Inc


  Web PDF Data
im1R Datasheet and Schematics    

What is included

  • 1 x iMod module, fully assembled, with pin headers (as selected in options above).