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.
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 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...
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 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 semiconductor SSR 2A 1 channel - 240VAC / 2A contacts. 5VDC coil
The module is equipped with 1-channel relay, semiconductor SSR with a constant control voltage of 5 V DC and AC voltage switching between the values from 100 VAC to 240 VAC....
Relays module, 8 channels with opto-isolation - 10A/250VAC contacts - 5V coil - blue
The module has eight relays SRD-05 with coil powered with a voltage of 5 V along with optoelectronic isolation. The system allows you to control actuators with microcontroller...
Optoisolation relay module 6 channel - 10A/250VAC contacts - 5V coil
The module has six SRD-05 relays with a coil powered with a voltage of 5 V along with optoelectronic insulation. The system allows you to control actuators with microcontroller...
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 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...
Optoisolation relay module 8 channel - 10A/250VAC contacts - 12V coil - blue
The module has eight SRD-12 relay with a coil powered with a voltage of 12 V along with optoelectronic insulation. The system allows you to control actuators with...
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...
Relay module 1 channel - 10A/250VAC contacts - 5V coil
The module is equipped with relay JQC-3FF-S-Z with coil powered with voltage 5 V without optical isolation of input. The system allows you to control actuators with...
Semiconductor Relay moduleSSR 2 channels - 240VAC / 2A contacts 5VDC coil - keyes
The module is equipped with a 2-channel, solid-state SSR relay with 5 VDC DC control voltage and switching AC voltage from 100 VAC to 240 VAC. Nominal current is 2 A. The unit...
Relay module 8-channel optoisolation - 10A/250VAC contacts - 5V coil - red
The module has eight relay SRD-05 with a coil powered with voltage of 5 V along with optoelectronic insulation. The system allows you to control actuators with microcontroller...
Transistor switch with adjustable delay - 15A / 36V
The module equipped with transistors powered with the voltage from 5 V to 36 V. T he system allows you to control actuators using microcontroller ports or any development set ....
Relay module Velleman 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...
Module relay semiconductor SSR 2A4 channels - 240VAC / 2A contacts 5VDC coil - keyes
The module is equipped with a 4-channel, solid-state SSR relay with 5 VDC DC control voltage and switching AC voltage from 100 VAC to 240 VAC. Nominal current is 2 A. The unit...
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...
16-channel relay module with optoisolation - 10A / 250VAC contacts - 12V coil
The module is equipped with sixteen SRD-12 relays with a 12-volt coil with optoelectronic isolation. The system allows you to control the actuators using the...
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...
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...
Relay modules offered in our store are electrical and electronic devices whose task, under certain conditions, is to suddenly change state in one or more output circuits. A relay responds to a change in an input physical quantity such as voltage, current, pressure or temperature in such a way that when it exceeds a certain level, the signal changes in steps, usually by means of "on" or "off" commands.
Through their operation, relays allow a higher amplitude or voltage level to have an effect in circuits. There are overcurrent and undercurrent relays that respond to a change in the measured quantity above or below a certain level. An example is an overcurrent relay, which will trip when the current flowing through it exceeds a certain value. We offer relay modules ready to be implemented into the system or model being designed.
Our relay modules are equipped with opto-isolation. What is optoisolation? It is nothing as complicated as it may seem. Optoisolation is separating individual circuits from each other by means of signal control. This is possible by using an optocoupler, which sends control signals in such a way as to electrically isolate these circuits. The process of optocoupling allows us to protect selected circuit 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 lies in the systems in which they are used. Contactors are devices for switching high-current systems - for example, electric motors, and relays in low-current systems or signals with zero potential - for example, in the programming of logic controllers. This also results in a much longer life of relays than of contactors (several million connections on relays, to a few thousand on contactors).
