16 Channel Relay Controller Board - module with 16 relays

Industrial module with Ethernet interface that allows control of 8 relays via RJ45 port and has 8 built-in digital inputs. It uses Modbus TCP protocol, PoE (Power over Ethernet) power supply and is equipped with a rail-mounted housing. Waveshare Modbus POE ETH Relay (B)

Crowtail – Dual Coil Latching Relay Module 2.0 is an energy-efficient dual-channel latching relay that retains its state after power loss. Intended for use in automation systems, remote control, and battery-powered projects.

Module with a relay and WiFi communication. Compatible with ESP-01 or ESP-01S

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-AC

Switch module with a maximum voltage of 40 V and a current of 10 A, based on a MOSFET transistor, HT0740 driver and I2C expander. It has a screw connection and a status LED. Pimoroni PIM455

Gravity: Digital 10A Relay Module is a module with 10A 35VAC / 30VDC relay compatible with devices with control signals in the range of 2.8 ... 5.5V. DFRobot DFR0473

Module with 2 relays 12 V with a maximum switching current of 7 A. Numato Lab RL20002

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

Module with 32 24 V relays with a load of up to 7 A. The board communicates via the Ethernet interface. Numato Lab 32ETHRL001-24

The module is equipped with four 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. ICSTATION ICSE012A

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

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.

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 16 12 V relays with a load of up to 7 A. The board communicates via the Ethernet interface. Numato Lab 16ETHRL001