4 Channel Relay Controller Board - module with 4 relays

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 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

The module with the relay is designed for the M5Stack sets. It allows you to control devices with a working voltage of up to 220 V AC and a current of up to 3 A or a voltage of 30 V DC and an intensity of 3 A. M5Stack U023

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

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

4-channel SSR 240V / 2A relay module with fuse. modSSR-4CH

Module with eight 240V/2A relays controlled by 5V with a fuse triggered by a high state. modSSR-8CH-H

Module with 4 digital inputs, 4 outputs and 6 analog (current) inputs. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP9038ADAM

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

Module with a 12 V relay and a timer. It enables the implementation of delayed switching on or off of the circuit with the possibility of time adjustment

Module with 5 V relay with a maximum switching current of 2 A. It communicates via the USB interface and does not require an additional power supply. Numato Lab USBPOWRL002

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

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

Universal module supervised by the website, which can control both DC circuits as well as powered from 230 V mains. The states of digital inputs, relays and control buttons are presented on the website. AVTMOD05

12V relay module with a radio receiver in a set with a remote control operating at 433 MHz.

2-channel SSR 240V / 2A relay module with fuse. modSSR-2CH