WP8025ADAM - module with 8 relays and RS485 interface

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

Compact module with MOSFET IRF520 24V/5A transistor.

Module with 8 relays with a voltage of 12 V and a load of up to 7 A. The board communicates via the Bluetooth wireless interface. Numato Lab BTRL001

HF32FA-G relay module for controlling devices with current consumption and voltage up to 10A/250VAC. Its compact design and high electrical performance make it ideal for use in home automation systems, DIY projects and IoT devices. Seeed Studio 114993555

Module with 32 24 V relays with a maximum switching current of 7 A. It communicates via the USB interface. Numato Lab RL320001-24

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

Industrial module with 8 relays. It communicates via RS485 interface and supports Modbus RTU protocol. Waveshare Modbus RTU Relay (EN)

The remotely controlled modulation module MOD-34 / AZ allows wireless load control with up to 10 A current consumption via a relay. It does not contain nRF24l01.

This SPST solid-state relay module allows for safe switching of DC circuits up to 30 V and 11 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 insulation and long service life. Pololu 5421

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

The module with the TPL5110 timer, which can generate a signal with an adjustable period from 100 ms to 2 h. It also works well as an external Watchdog Timer. Adafruit 3435

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.

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 dedicated to home automation based on the Raspberry Pi. It allows you to control two devices 250VAC/7A or 30VDC/10A, providing isolation with an optocoupler. SB Components 21932

Industrial module with 16 relays. It communicates via the RS485 interface and supports the Modbus RTU protocol. Waveshare Modbus RTU Relay 16CH

Module with 4 SSR relays with a load of up to 3 A. The board communicates via the Ethernet interface. Numato Lab 4ETHSSR001-DC