4 Channel Relay Controller Board - module with 4 relays

Module with 8 relays with a voltage of 12 V and a load of up to 10 A. The board communicates via the Ethernet interface. Numato Lab 8ETHRL001

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

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 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

The module with 4 relays is designed for the M5Stack sets. It allows you to control devices with an operating voltage of up to 250 V AC and a current of up to 10 A or a voltage of 28 V DC and a current of 10 A. M5Stack U097

A compact Omron G5LE-14-DC12 relay module that allows you to control loads up to 10 A with a coil voltage of 12 V. Thanks to the BSS138K MOSFET transistor, it can be activated by a 2.5 V to 20 V logic signal, facilitating interoperability with microcontrollers. The module is equipped with 5 mm screw terminals, a 3-pin JST SH connector, and LEDs to indicate operation. Pololu 5663

Two-channel relay module equipped with optoisolated control inputs and relays with 5V coils. Designed for controlling loads up to 10A at 250VAC from a microcontroller or development platforms

The 5 V relay module enables safe switching of high-voltage loads via microcontroller logic. Its compact size, mechanical durability, and wide operating conditions make it a versatile choice for automation, lighting control, and DIY electronics projects.

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 the SLA-05VDC-SL-C relay with a maximum load of 30 A. The board is equipped with a Grove connector and is controlled by a digital signal. Seeed Studio 103020012

This module allows you to control two SPDT relays and eight digital inputs up to 24V. Powered via USB Type-C, it operates as a CDC device, allowing for simple operation without additional software. The module is ideal for home automation, IoT projects, test systems, and lighting control. Indicator LEDs and a rugged design ensure intuitive control and reliable operation in a variety of applications. Numato Lab NLUSBRC002

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

Module with 16 relays 12 V with a maximum switching current of 7 A. Numato Lab RL40003

Industrial module with 32 relays. It uses communication via the RS485 interface and supports the Modbus RTU protocol. Waveshare Modbus RTU Relay 32CH

4-channel module with relays, designed to work with the Raspberry Pi. It can switch 120VAC/2A or 24VDC/2A signals. SB Components 14071

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