4 Channel USB Powered Relay Module - a module with 4 relays and a USB interface

Module with SSR M281 relay with a load of up to 1 A. The board is equipped with a Grove connector and is controlled by a digital input. Seeed Studio 101020603

Module with 8 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 NLRE1001-A

Module with 16 relays with a maximum switching current of 7 A. It communicates via a USB interface. Numato Lab RL160001-24

The module contains a 5 V relay with a maximum current of 10 A (250 VAC) and optoisolated inputs, and with jumpers it is possible to select high or low switching. The module is equipped with screw connectors

The module with the HLS8-T73 relay with a load up to 5 A. The board is equipped with a Grove connector and is controlled by a digital input. Seeed Studio 103020005

ModRL01 module with 10A/250VAC (10A/24VDC) relay, supply of 5 V load relay coil, additional control circuit, protected overvoltage control

Module with 32 12 V relays with a load of up to 7 A. The board communicates via the Ethernet interface. Numato Lab 32ETHRL001

Module with 32 relays and 8 analog inputs. Communicates via the WiFi wireless interface. Numato Lab WFRL320001

Module with 4 SSR relays with a load of up to 3 A. The board communicates via the USB interface. Numato Lab SSR40001-AC

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

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

This SPST solid-state relay module allows for safe switching of DC circuits up to 60 V and 7 A, offering galvanic isolation and low conduction resistance (approx. 30 mΩ) thanks to the use of back-to-back MOSFET transistors. It features fast switching time (up to 1 ms), low control current consumption (approx. 10 mA), and the ability to control a signal from 2.7 to 40 V. Its compact design, lack of mechanical components, and the ability to mount on 2.54 mm connectors or screw terminals make the module a durable and quiet solution for systems requiring reliable isolation and long service life. Pololu 5420

Module with 2 relays 12 V with a load of up to 7 A. The board communicates via the Bluetooth wireless interface. Numato Lab BTRL002

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 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-DC

The module with 2 relays is designed for the M5Stack sets. It allows you to control devices with an operating voltage of up to 250 V AC and a current of up to 8 A or a voltage of 28 V DC and a current of 8 A. M5Stack U131