WiFi-controlled relay module for ESP-01/01S

Module with SSR relay with a load of up to 3 A. It communicates via the USB interface and does not require additional power supply. Numato Lab SSRP20001-DC

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

Module with 4 relays 12 V with a maximum switching current of 7 A. Numato Lab RL40002

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 4 relays JZC-11F with a load of 5A. It enables switching devices with high power using a microcontroller. I2C communication. SparkFun COM-16566

The module contains four 5V relays with a maximum current of 10A (250 VAC) and opto-isolated inputs, and with jumpers it is possible to select switching with high or low status. The module is equipped with screw connectors. modRL04_ISO

Module with 8 SSR relays with a load of up to 3 A. The board communicates via the Ethernet interface. Numato Lab 8ETHSSR001-DC

Industrial module with an Ethernet interface that allows you to control 8 relays via the RJ45 port. It uses Modbus TCP protocol, supports PoE (Power over Ethernet) and is equipped with a rail-mounted housing. Waveshare Modbus POE ETH Relay

A magnetic latching relay that features low power consumption and quiet operation. It allows switching of signals up to 36 V and 10 A. It remains in the last position it was in before power was lost. DFRobot DFR0996

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

Industrial module based on the ESP32-S3 microcontroller, which supports WiFi, Bluetooth and RS485 interface. Equipped with 6 high-power relays (up to 10A at 250VAC/30VDC), it allows for safe control of various devices and integration with industrial sensors via the Modbus protocol. The module supports popular programming environments such as Arduino and MicroPython, making it ideal for AIoT and remote monitoring applications. Waveshare ESP32-S3-Relay-6CH

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

4-channel module with relays, designed to work with the Raspberry Pi. It can switch 250VAC/7A or 30VDC/10A signals. SB Components 06670

I/O module supporting Modbus RTU via USB and RS485 and Modbus TCP via Ethernet. It has 4 built-in SPST relays and 8 digital inputs, 8 digital outputs and 4 analog inputs. Provides a flexible DIN rail mounting system. Numato Lab NLRXE002-A

1-channel module with a relay 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 21277