2 Channel USB Relay Module - a module with 2 relays and a USB interface

Module with 2 relays SSR G3MC202P with a load up to 2 A. The board is equipped with a Grove connector and is controlled via digital inputs. Seeed Studio 103020134

Module with 8 relays 12 V with a maximum switching current of 7 A. Numato Lab RL40004

This module allows independent control of two Omron G5LE-14-DC12 SPDT relays, supporting currents up to 10A. Thanks to built-in BSS138K MOSFETs, it can be controlled directly from 3.3V or 5V development boards such as Arduino or Raspberry Pi. Each channel is equipped with an LED to indicate relay activation and 5mm screw terminals for convenient circuit connection. Pololu 5666

The module with two 12 V relays and optoisolation enables safe control of AC and DC loads from a microcontroller. Support for high-level or low-level triggering and LED indication make it a universal component in automation systems, control applications, and DIY projects. modRL02_ISO-12V

Module with 2 SSR relays with a load of up to 3 A. The board communicates via the USB interface. Numato Lab SSR20001-DC

Module with 16 relays and 8 analog inputs. Communicates via the WiFi wireless interface. Numato Lab WFRL160001

4-channel switch module with a maximum voltage of 16 V and a current of 2 A based on a MOSFET transistor. It is controlled by digital inputs. It is equipped with a screw connection and status LEDs. Adafruit 5757

Module with four 240V/2A relays controlled by 5V with a fuse triggered by a high state. modSSR-4CH-H

Pololu 5425 offers silent, reliable operation when switching currents up to 10 A and voltages up to 30 V, providing galvanic isolation and full configurability of RC control parameters. The version without soldered connectors allows easy adaptation to individual mounting needs in RC and automation projects.

Module with MOSFET transistor, 5-36 V, 20 A, switching frequency 1 kHz. DFRobot DFR0457

Module with MOSFET and a Gravity connector. It allows you to easily connect and control the voltage from 5V to 30V and the current up to 2.5A. DFRobot DFR0643

Module with 2 SSR relays with a load of up to 3 A. The board is equipped with the ULN2003 system and communicates via a digital interface. Numato Lab SSRC20001-AC

Module with 32 relays and 8 GPIO pins and 8 analog inputs. It communicates via the RS485, USB or Ethernet interface and supports the Modbus RTU/TCP protocol. Numato Lab NLRM1002-A

Module with relay up to 5.5 A and 240 V AC controlled by the I2C interface. SparkFun COM-15093

This industrial relay module, powered by the Raspberry Pi RP2350B microcontroller, features six 10A 250VAC/30VDC relays and an isolated RS485 interface. It ensures safe and stable operation thanks to opto-isolation, power isolation, and surge protection. It supports programming in C/C++, MicroPython, and the Arduino IDE, and the 40-pin Pico HAT connector allows for easy expansion. Its robust DIN housing and 7–36V DC power supply make it ideal for industrial automation and IoT projects. Waveshare RP2350-Relay-6CH

8-channel module with relays, designed to work with the Raspberry Pi. It can switch 250VAC/7A or 30VDC/10A signals. With LCD 4,3" display. SB Components 21871