32 Channel WiFi Relay Module - module with 32 relays and WiFi communication

Module with relay SSR G3MC202P with a load up to 2 A. The board is equipped with a Grove connector and is controlled via digital input. Seeed Studio 103020137

The module offers 16 TTL-compatible GPIOs, 10 analog channels and individual I/O configuration, making it ideal for automation, DIY projects and advanced system engineering, with the possibility of remote control via standard network interfaces. Numato Lab NLETHGC016-HA

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 4 relays SRD-05VDC-SL-C with a load up to 10 A. The board was equipped with a Grove connector and communicates via I2C. Seeed Studio 103020133

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 two 12 V relays and optoisolation enables safe control of AC and DC loads from a microcontroller. Support for high-level or low-level triggering and LED indication make it a universal component in automation systems, control applications, and DIY projects. modRL02_ISO-12V

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

Module with relay up to 5.5 A and 240 V AC controlled by the I2C interface. SparkFun COM-15093

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

Industrial relay module controlled via RS485 interface with Modbus RTU protocol support, offering 8 outputs with maximum load of 10 A. Equipped with galvanic isolation, opto-isolation, TVS diodes and DIN mounting, it ensures safe and reliable operation in harsh industrial conditions. Thanks to functions such as flash-on/off, configurable RS485 address (1-255), signaling diodes and wide power supply range (7-36 V), the module is perfect for building automation and device control. Waveshare Modbus RTU Relay (B)

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.

Module with monostable relay. It allows you to control high-power elements with a microcontroller. Adafruit 3191

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

The module is designed for easy and reliable switching between two different power sources. It ensures safe use of two power sources (with voltage from 1.6 to 5.5 V) without the risk of damaging components. Adafruit 5830

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

Module with 4 SSR relays with a load of up to 3 A. The board communicates via the USB interface. Numato Lab SSR40001-DC