8 Channel Relay Controller Board - module with 8 relays

The module with 4 relays, designed to work with the micro:bit. It allows you to control devices with operating parameters up to 120VAC/2A or 24VDC/2A. SB Components 14118

Module with one 5 V relay with a maximum switching current of 10 A. It communicates via a USB interface and does not require additional power supply. Numato Lab NLRL1001-A

The module with SSR BT136S relay with a load of up to 2 A, designed for M5Stack sets. The board is equipped with a Grove connector and is controlled by a digital input. M5Stack U122

Module with 32 relays 12 V with a maximum switching current of 7 A. Numato Lab RL320003

The 24 V relay module with adjustable delay time offers a practical solution for AC/DC load control in automation and electronics applications

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

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

Module with 4 relays controlled by the I2C interface. Each relay can switch currents up to 40 A at 28-380 V AC. SparkFun KIT-16833

Module with one 240V/2A relay controlled by 5V with a fuse triggered by a high state. modSSR-1CH-H

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

Module with 2 relays controlled by the I2C interface. Each relay can switch currents up to 25 A at 12 to 280 V AC. SparkFun COM-16810