Monostable ON-OFF switch - PBW-16BPD - 2A 250V - flat red point
This section of our store is full of different types of relay modules with many channels (even up to 16 on a single board) and supporting various interfaces - from Bluetooth to SPI or Wi-Fi and also with opto-isolation. Every DIY enthusiast and electronics technician will find in this section something for themselves and their model or system. Check what we have prepared for you and dive into the world of relays for Arduino, Raspberry Pi and other microcomputers.
Relay module 1 channel with optoisolation - 10A/250VAC contacts 5V coil
The module is equipped with relay SRD-05 with coil powered with a voltage of 5 V with optical isolation of input and mounting holes. The system allows you to control actuators...
16-channel relay module with optoisolation - 10A / 250VAC contacts - 12V coil
The module is equipped with sixteen JQC3F-12VDC-C relays with a 12-volt coil with optoelectronic isolation. The system allows you to control the actuators using the...
Optoisolation relay module 6 channel - 10A/250VAC contacts - 5V coil
The module has six SRD-05VDC-SL-C relays with a coil powered with a voltage of 5 V along with optoelectronic insulation. The system allows you to control actuators with...
Relay module 2 channels H/L with optoisolation - contacts 10A/250VAC - coil 12V
The module has two SRD-05 relays with the coil powered with the voltage of 12 V with the optical insulation of the input and mounting holes. The system allows you to control...
Relay module 2 channels H/L with optoisolation - 10A/250VAC contacts - 5V coil
The module has two SRD-05 relays with the coil powered with the voltage of 5 V with optical isolation of the input and mounting holes. The system allows you to control...
Relay 2 channel module with optoisolation - 10A/250VAC contacts - 5V coil
The module has two relays SRD-05 with a coil powered with a voltage of 5 V with optical isolation of input and mounting holes. The system allows you to control the actuators...
Relay module 4 channels with optoisolation - 10A/250VAC contacts - 5V coil
The module is equipped with four relays JQC-3F with a coil powered with a voltage of 5 V with optical isolation of input and mounting holes. The system allows you to control...
16 channel relay module with optical insulation - contacts 10A/250VAC - coil 5V
The module has sixteen relays SRD-05 with a coil powered with a voltage of 5 V along with optoelectronic insulation. The system allows you to control the actuators with...
Module 8 relays with optoisolation - 10A / 250VAC contacts - 5V coil
The module has eight SRD-12 relay with a coil powered with a voltage of 12 V along with optical isolation of the input and mounting holes. The system allows you to control...
Iduino relay 2 channel module with optoisolation - 10A / 240VAC contacts - 5V coil
Module with two SRD-05 relays with the coil powered with a voltage of 5 V and optical insulation of the input, and with the mounting holes. The system allows you to control...
Relay module combined light-operated switch 12V 10A/250VAC
The module is equipped with SRD-12 relay with a coil powered with a voltage of 12 V with mounting holes. The system allows you to control the actuators depending on the...
Relay module 2 channels - 10A/250VAC contacts - 5V coil
Dual module is equipped with SRD-05 relays with the coil powered with the voltage of 5 V , the transistor amplifier and mounting holes. The system allows you to control...
Relay module 4 channels + Bluetooth 4.0 BLE - 10A / 250V contacts - 5V coil
The module has four SRD-05 relays with a coil powered with the voltage of 5 V, it was also equipped with a module Bluetooth 4.0 BLE allowing ot control the devices via Android...
8 channel optoisolation relay module - 10A/250VAC contacts - 12V coil - red
The module has eight SRD-12 relays with a coil powered with the voltage of 12 V, with optoelectronic insulation. The system allows you to control the actuators using the...
Optoisolation relay module 8 channel - 10A/250VAC contacts - 12V coil - blue
The module has eight relay with a coil powered with a voltage of 12 V along with optoelectronic insulation. The system allows you to control actuators with microcontroller...
Sonoff Mini R2 - 240V WiFi relay - Android / iOS app
Ready-made 240 V relay module with small dimensions, so it can be mounted in a flush-mounted box. The device is controlled via a WiFi network using the eWeLink application...
Transistor switch with adjustable delay - 15A / 30V
The module equipped with transistors powered with the voltage from 5 V to 30 V. T he system allows you to control actuators using microcontroller ports or any development set ....
BleBox SwitchBox v3 - 230V WiFi relay - Android / iOS application
A small module for the control of 230 V domestic appliances up to 3 kW . The controller also allows you to measure the energy consumed . The control is done via WiFi with...
Ardi Relay - 4 channel relay - overlay for Arduino Uno - SB Components SKU27194
Ardi Relay from SB Components is an expansion board equipped with 4 relays with opto-isolation ensuring electrical separation. Additionally, built-in LEDs , separate for...
Relay module 4 channels - 10A/250VAC contacts - 5V coil
Quadruple module is equipped with SRD-05 relay with a coil powered with the voltage of 5 V, the transistor amplifier and mounting holes. The system allows you to control...
The relay modules offered in our store are electrical and electronic devices whose task, when appropriate conditions are met, is to suddenly change the state in one or more output circuits. In addition, they are used to control devices and are used in alarm systems.
The relay responds to a change in the input physical quantity, such as voltage, current, pressure or temperature, in such a way that when it exceeds a certain level, the signal changes stepwise, usually due to the command "on" or "off". Relay modules equal to each other include: maximum switching power.
By their operation, relays allow higher amplitudes or voltage levels to produce effects in circuits. There are overflow and underflow relays that respond to a change in the measured quantity above or below a specified level.
An example is an overcurrent relay, which will operate when the current flowing through it exceeds a certain value. We offer relay modules ready to be implemented into the designed system or model.
Our relay modules that we present to you are equipped with opto-isolation. What is opto-isolation? It's nothing as complicated as it may seem. Optoisolation is the separation of individual circuits using signal control.
This is possible thanks to the use of an optocoupler, which sends control signals in such a way as to electrically isolate these circuits. The opto-isolation process allows you to protect selected system elements - usually the most expensive ones in our system.
What is the difference between these two systems if the principle of their operation is the same? It depends on the systems in which they are used. Contactors are devices for switching high-current systems - for example electric motors, and relays are used for low-current systems or zero-potential signals - for example in programming logic controllers.
This also results in a much greater durability of relays than contactors (several million switches on relays, up to several thousand on contactors).
Our offer includes only relay modules from renowned manufacturers. Individual models differ, among others, in: supply voltage (e.g. 12V DC), switch-on time, maximum switching current (relay contact current).
A relay module is an electronic or electrical element whose main task is to suddenly change the state in a circuit or circuits. This change is initiated by meeting certain conditions. The relay module is designed to change voltage, temperature, pressure or current in steps. This usually happens thanks to the use of commands such as disable or enable. Individual models of relay modules differ from each other, among others: maximum contact voltage and maximum switching power.
Relay modules are distinguished by their versatile use. They are used, among others: as lighting controllers and switches for various types of devices and electrical equipment, including engines. In addition, they are used as a controller for various executive systems. Other applications are alarm systems and access control systems. The relay module can work with a Raspberry Pi minicomputer or an Arduino microcontroller.
