64 Channel USB Relay Module - a module with 64 relays and a USB interface

Module with one 5 V relay with a maximum switching current of 10 A. It communicates via a USB interface and does not require additional power supply. Numato Lab NLRL1001-A

The module is designed for easy and reliable switching between two different power sources. It ensures safe use of two power sources (with voltage from 1.6 to 5.5 V) without the risk of damaging components. Adafruit 5830

Pololu 5424 enables precise switching of loads up to 10 A at voltages up to 30 V, providing galvanic isolation as well as silent and maintenance-free operation thanks to the use of a solid-state relay. Ideal for controlling devices in RC systems, automation, and projects requiring durability and reliability.

8-channel PoE module with relays allowing you to connect your PC to other electronic circuits via the network. It does not need a separate cable for power and data transmission. It can be controlled via a simple web interface or Telnet. Numato Lab NLRP1001-A

Module with 4 relays with a maximum switching current of 7 A. Equipped with the ATmega328P microcontroller, it can be programmed in the Arduino IDE. Numato Lab PRLY002

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 2 relays with a maximum switching current of 7 A. It communicates via the USB interface. Numato Lab RL20001

2-channel module with relays, designed to work with the Raspberry Pi. It can switch 250VAC/7A or 30VDC/10A signals. SB Components 14088

A compact Omron G5LE-14-DC12 relay module that allows you to control loads up to 10 A with a coil voltage of 12 V. Thanks to the BSS138K MOSFET transistor, it can be activated by a 2.5 V to 20 V logic signal, facilitating interoperability with microcontrollers. The module is equipped with 5 mm screw terminals, a 3-pin JST SH connector, and LEDs to indicate operation. Pololu 5663

Module with 16 relays and 8 IO pins and 8 analog inputs. It communicates via the RS485 or USB interface and supports the Modbus RTU protocol. Numato Lab NLRE1002-A

4-channel module with relays designed to work with the Raspberry Pi Pico. It can switch signals up to 250 V AC and 7 A or 30 V DC and 10 A. SB Components 21178

Module with 2 relays 12 V with a maximum switching current of 7 A. Numato Lab RL20002

Module with monostable relay. It allows you to control high-power elements with a microcontroller. Adafruit 3191

A versatile module that allows you to control higher voltage devices such as 12V LED strips while simultaneously powering a microcontroller from 3.3V. The module integrates an LMR14203 converter and an N-channel MOSFET (PSMN7R0-100BS), allowing you to power the board at up to 12V and drive loads up to 10A, with additional protection features and LED indicators, making it ideal for projects requiring efficient power control. SparkFun COM-23979

4-channel module with relays, designed to work with the Raspberry Pi. It can switch 120VAC/2A or 24VDC/2A signals. SB Components 14071

Crowtail-TPL5111 Reset Enable Timer is a module for energy-efficient power control of devices in battery-powered projects. It offers six programmable time intervals and an automatic reset mode, supporting the design of low-power circuits.