2 Channel Programmable Relay Module - programmable module with 2 relays

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

16-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 NLRP1002-A

Module with relay HF152FD 16A. It allows you to control devices with a current consumption of up to 16A using a low-power signal. The module has a relay activation time of about 10ms. DFRobot DFR0251

Four-channel relay module with optoisolation, allowing control of loads up to 10 A at 250 V AC or 30 V DC. Thanks to standard interfaces and separate JD-VCC power supply, it is compatible with most microcontrollers and automation systems, ensuring safe integration and convenient installation.

Module with 32 12 V relays with a maximum switching current of 7 A. It communicates via the USB interface. Numato Lab RL320001

The module is equipped with eight 10A / 250VAC relays controlled independently via a serial bus (UART) or from a PC (through a microUSB connector). The NO / NC contacts of the relays have been led to the ARK screw terminals. The board recommended for use with Arduino enables the control of eight relays using only two microcontroller lines. ICSTATION ICSE014A

Module with electromechanical relay. It allows you to control devices with an operating voltage of up to 250 V AC and a current of up to 3 A or a voltage of 30 V DC and a current of 3 A

This XIAO ESP32-C6-based relay module is designed for intelligent automation. It allows independent control of six channels via Wi-Fi, Zigbee, Thread, or BLE, and thanks to the built-in ESPHome, it easily integrates with Home Assistant. It supports DC devices up to 30V, features two Grove ports for expansion, and comes in an aesthetically pleasing PLA enclosure. Ideal for IoT systems, home automation, lighting, and motor control. Seeed Studio 114993588

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

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

Module with 8 digital inputs and 4 relays with a maximum switching current of 2 A. It communicates via the RS485 interface and supports the Modbus RTU protocol. The board is enclosed in an industrial housing. Wellpro WP8024ADAM

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

Module with 64 relays with a maximum switching current of 10 A. It communicates via the USB interface. Numato Lab RL640001

Industrial Ethernet module that allows control of 30 relays via RJ45 port. It uses Modbus TCP protocol, PoE (Power over Ethernet) power supply and comes with a rail-mounted housing. Waveshare Modbus POE ETH Relay 30CH

8 Channel 5V Relay Module