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Best Choice ECSiNG 
ECSiNG 10PCS 5-Pin Terminals 5VDC Power Relay PC Board Relay for Industrial Control Automotive Electronics Safety System Premium Quality and Sealed Design: Constructed from high-quality materials, this relay features a waterproof and dustproHomyl 
HOMYL DC 12V 8-Channel USB Relay Board Module PC Computer Control for Home Automation This is USB controlled relay module with 8 relays SRD-05VDC-SL-C.SunFounder 
SunFounder 2 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino UNO R3 MEGA 2560 5V 2-Channel Relay interface board, and each one needs 15-20mA Driver CurrentCHENBO 
4 pcs DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with Optocoupler for Arduino The module uses genuine quality relay, normally open interfacesBest Value Sorandy 
Sorandy USB Control 2NO 2NC Relay Module, Plug and Play, Automatic Operation, 0.5A Max Switching Current, Smart Home PC MULTIFUNCTIONAL: The LCUS drive- USB computer drive- control switch relay module is an efficient and intelligent controlECSiNG ECSiNG SRD-05VDC-SL-C 5-Pin Terminals 5 VDC Power Relay PC Board Relay for Industrial Control Automotive Electronics Sec PREMIUM QUALITY & SEALED DESIGN Made of high quality materials, this relay features a waterproof and dustproof seal thatCHENBO 
2 pcs 5V 2 Channel DC 5V Relay Module with Optocoupler High/Low Level Trigger Expansion Board for Arduino Maximum load: AC 250V/10A, DC30V/10AJBtek JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM Equiped with high-current relay, AC250V 10A ; DC30V 10ADomary 4 Channel Relay Module 5V USB Expansion Board for PC Control Switch [User-friendly Design] With the ability to control the opening and closing of the relays using serial debugging softwareQezodsx Qezodsx One Channel Relay ESP32-WROOM Development Board Single Relay Module DC 7-60V Power Supply for Home Appliance Acc 1. 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Supports Raspberry Pi A+ 3A+ B+ 2B 3B 3B+ 4B, the RPi Relay Board gives your Pi the ability to control high voltage/highJimcat star 8 pcs DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with Optocoupler 8 pcs DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with OptocouplerIsMwav IsMwav AC 220V/DC 5-30V Power Supply ESP32 WiFi Bluetooth BLE Four-Way Relay Module ESP32-WROOM Development Board 1/O Po 2: Onboard and stable ESP32-WROOM-32E module, large-capacity 4M FlashMiZOELEC 5V 2-CH 2 Channel RS232 Serial Control Relay Switch Board SCM PC Relays 5V 2-CH 2 Channel RS232 Serial Control Relay Switch Board SCM PC RelaysAribrnten Aribrnten 2PCs Dual Time Adjustable Cycle Delay Timing Relay Repeat on OFF Switch Infinite Loop Module AC 100V 110V 240V With the start / stop function, after the start of the module into the infinite loop mode, the relay work in accordanceAOICRIE AOICRIE 5Pcs DC 12V 1 Channel Relay Module Board Shield with Optocoupler Isolation Support High or Low Level Compatible This Relay Board Maximum load: AC 250V/10A, DC 30V/10A With power and relay action indicator.each relay has normally opeSorandy DC 36V USB Control Switch, Relay Module Drive, Computer PC Control, Relay Module Expansion Board, WiFi Wireless Smart Sw MULTIFUNCTIONAL: Support for a variety of operating systems and programming languages, a wide range of applications, higXiuxin Xiuxin 2pcs 5V 8 Channel Relay Module Board for Arduino PIC AVR DSP ARM 2pcs/lot 8 Channel relay module board, Working voltage: 5VPerGar Optocoupler Isolation Board 8 Channel Driver Photoelectric Isolated Module 817 3.6 30V Achieve Unparalleled Voltage Conv DRIVE VARIOUS OCCASION: Optical isolation has strong interference resistant ability, which can drive high power transistLiyeehao MCU PC USB Control Relay Board, High-Performance Microcontroller Chips USB Control Relay Module, for Home Industry 100% brand new and high quality.DSD TECH DSD TECH SH-UR01A USB Relay Controller for Computer and Laptop(1CH) USB Relay Controller:With this USB Relay controller, you can control the switch on your PC or laptop.TOOYFUL USB Eight Channel 8 Relay Switch Output Module Board PC Computer Controller Using /OFF switching electrical devices for , , solenoids etc.Fafeicy PWM Driver Module 4 Wire PCB Wide Voltage Temperature Controller Relay Switch Board with Probe 12V for PC Fan Alarms SPECIFICATION: The working temperature of this temperature detection control module is in ‑25℃‑85℃, the working humiditySuesacy Suesacy 1 PCS Relay Module Board with Optocoupler Self-Locking Timing Relay 4 Channel Multi-Function 3. DC 8V-36V wide voltage input, with power supply anti-reverse connection function, not damage the module due to wrongMingzhe 8-Channel 12VDC Type B USB Relay Board Module Controller Automation Robotics for Robotics Labs [Efficient Relay Control] When connected to a pc and restarted, the relays toggle multiple times due to the ftdi chip'sLONELY BINARY Lonely Binary 3- Pack ESP8266 NodeMCU WiFi Development Board – CP2102, Full-Size Microcontroller Module with USB for Ard ✅【ESP8266 NodeMCU Development Board】 – Full-size module with built-in WiFi and CP2102 USB-to-Serial chip, perfect for wiAcxico Acxico 2 pcs ESP8266 ESP-01S + 5V WiFi Relay Module Smart Home Remote Control Unlock Board This module uses genuine relays and normally open interfaces. High stability and low power consumption.Mellisso Mellisso 5X Esp8266 Esp-12F Wifi Relay Module 2Channel 5V/8-80V Network Relay Switch for Ide Smart Remot Control 3. Onboard WIFI module reset button;Annadue Annadue Relay Module Relay Switch, 2 Channel 5V Computer Usb Smart Switch Controller Pc Relay Drive Module Expansion Boa Onboard square USB interface, stable connection.Coolwell Coolwell Waveshare Quality 3-Ch(Channel) Relay Expansion Board Designed for Jetson Nano, Optocoupler Isolation Directly 3 Channels Relay Control; Configurable Control Pin, Up To 2x Stackableeletechsup DC 12V 24V 2Ch DB9 UART Relay Module RS232 Serial Port Switch Board for PC PLC Motor LED PTZ (24V) Brand Name : eletechsupsb components Relay 4 Zero 3V 4 Channel Relay Shield for Raspberry Pi, Relay HAT Expansion Relay Board for Raspberry Pi 4B/3B+/3B/2B/B 4 High-quality 3V Relays that loads up to 2A/24VDC or 2A/120VAC.eletechsup DC 12V 24V 2Ch DB9 UART Relay Module RS232 Serial Port Switch Board for PC PLC Motor LED PTZ (12V) Brand Name : eletechsupPanasonic Panasonic PC POWER RELAY BOARD, A608B3E60AP This is an O.E.M. Authorized partReland Sun 4-Way 5V Relay Module Control Expansion Board Standard shield interfaces and shapes.Eacam Relay Expansion Board, 3-Channel, 5A, Optocoupler Isolation, Indicator, Jumper Cap, for A+/B+/2B/3B/3B+ Control [Powerful Relays] - Can connect to loads up to ≤5a ac or ≤5a 30v dc, ensuring performance.Mellisso Mellisso 4X ESP8266 Wireless WIFI 4 Channel Relay Module ESP-12F Wifi Development Board for 5V/8-80V Power Supply 2. The I/O port of the WIFI module and the UART program download port are all led out to facilitate secondary developmenDWZ SRD-05VDC-SL-C 1 2 4 8 -Channel 5V 12v 24v Relay Module Free Driver USB Control Switch PC Intelligent Control (5V 2-Chan APP Download:Aexit Aexit 3 (Control electrical) Pcs PCB Board Mounted Soldering 8 Pin Auto General Relay Socket Base Holder 18F-2Z-A2 7A (7 Product Name : Relay Socket Base;Rated Voltage/Current : 7A/220V For AUClisted Clisted 1 PCS Relay Module Board with Optocoupler Self-Locking Timing Relay DC 8V-36V 4 Channel elechawk I2C Qwiic Cable Kit Stemma QT Wire for SparkFun Development Boards Sensor Board Breakout Breadboard 4 Pin Sh1.0 Connecto Includes 12 pcs cables of various lengths and styles (10cm,20cm, 30cm, 50cm. SH1.0 connector and breadboard Jumper and FHosyond Hosyond 6Pack 2 Channel DC 5V Relay Module with Optocoupler Relay Board for Arduino Raspberry Pi MEGA2560 The power supply voltage of the relay module is DC5V. The maximum output load is AC250V 10A and DC30V 10A.Dorhea Dorhea ESP8266 ESP-12F NodeMcu D1 Module WeMos Lua 4M Bytes WLAN WiFi Internet Development Board + Relay Shield + 2.54mm The esp8266 module is 11 digital input / output pins, all pins with interrupt / PWM / I2C / support 1 line (except D0);Lyaciomn Lyaciomn 1 PCS Relay Module Board with Optocoupler Self-Locking Timing Relay DC 8V-36V 4 Channel Multi-Function SENECESLI LAN Ethernet 2 Way Relay Board Delay Switch, LAN Ethernet Controller Module with Expandable Hardware Options, Web Server INDUSTRIAL MICROCONTROLLER: Enhanced capability with industrial grade STC microcontroller + ENC28J60: from the stable fiEosnow Sensitive Smart Control Switch Jog Intelligent USB Relay Module CH340 Single-chip for Controlling Onboard CH340 USB control chip.MiZOELEC 1Pcs DC 5V 10A 8 Channel Micro USB Relay Indicator Board Module PC Upper Computer ICSE014A Software Control 1Pcs DC 5V 10A 8 Channel Micro USB Relay Indicator Board Module PC Upper Computer ICSE014A Software ControlHosyond Hosyond 4Pack 4 Channel DC 5V Relay Module with Optocoupler Relay Board for Arduino Raspberry Pi MEGA2560 The power supply voltage of the relay module is DC5V. The maximum output load is AC250V 10A and DC30V 10A.DWEII DWEII 10 PCS 2 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with Arduino R3 5V 2-Channel Relay interface board, and each one needs 15-20mA Driver CurrentMingzhe 5V Dual Channel WiFi Relay Module Smart Home Remote Switch for IOT Devices [User-friendly Design] Includes board mode selection and real-time status indicator for easy monitoring and control.EMSea EMSea 10 Way Fan Hub PWM PC Fan Control Board 12V SATA for Power with 10 4-Pin Fan Connections and PWM Connection Cable Control Up to 10 Fans: The 10-way fan hub allows you to control up to 10 fans, providing a practical solution for managi26% Off ELEGOO ELEGOO UNO R3 Project Complete Starter Kit with Tutorial Compatible with Arduino IDE (More Than 200 Items) More than 200 components, this is the most complete starter kit compatible with Arduino IDE. Great value starter kit forKOSDFOGE Relay Module, 2-Channel 5V Computer USB Smart Switch Controller PC Relay Drive Module Expansion Board Military-grade PCB board production. computercomponentZLXHDL Relay Module,1 Channel Optocoupler Relay Board 5v/12v/24v High & Low Trigger Four Fixing Bolt Holes are Provided,for Ind Enhanced Performance: Our Relay Module adopts a patch photocoupler isolation design, providing strong driving ability anZLXHDL Relay Module,1 Channel Optocoupler Relay Board 5v/12v/24v High & Low Trigger Four Fixing Bolt Holes are Provided,for Ind Enhanced Performance: Our Relay Module adopts a patch photocoupler isolation design, providing strong driving ability anDomary 12VDC Type B USB Relay Board Controller Automation Robotics 8-Channel for DIY Projects [No Reverse Voltage ] : Caution - damage if vcc(+12v) and gnd are reversed.ZLXHDL Relay Module,1 Channel Optocoupler Relay Board 5v/12v/24v High & Low Trigger Four Fixing Bolt Holes are Provided,for Ind Enhanced Performance: Our Relay Module adopts a patch photocoupler isolation design, providing strong driving ability anEMSea EMSea 2X Chassis Fan Hub SATA 1 to 8 Way12V 3/4 PIN Cooling Fan Splitter Controller Hub PWM for PC Desktop Computer Moth Designed for 12V 8 Way 3pin/4pin Fan Hub Speed Controller Regulator.Lrocaoai 3X One Channel Relay ESP32-WROOM Development Board Single Relay Module DC 7-60V Power Supply for Home Appliance 2. The I/O port and UART program download port of the ESP32 module are all led out to facilitate secondary development;Waveshare Waveshare Quality 3-Ch Relay Expansion Board Designed for Jetson Nano Optocoupler Isolation Standard 40PIN GPIO header, directly pluggable onto the Jetson NanoGearwell USB Relay Module Wi Fi Smart Switch 4-Channel 12V Computer USB Smart Switch Controller PC Relay Module Expansion Board U Onboard square USB interface, stable connection.Peakloong Peakloong 1 PCS 5V Optocoupler Drive Module Eight-Way Relay Control Board Low Level Trigger Low level pull-in, high level release. The status indicator light is on when it is engaged and off when it is released.Phipps Electronics 5V Light Sensor Photoresistor Relay Board Module - XH-M131 Automates light control based on ambient light levels.UIOTEC 1 PCS 4 Channel 5V Relay Shield Expansion Board V1.3 LONELY BINARY Lonely Binary 100 Pcs NE555 Timer IC DIP 8 Precision Timer 4.5V-18V 10mA for Arduino, ESP32, Raspberry Pi Pico Projects ✅【NE555 Precision Timing IC】 – Classic 555 timer IC ideal for generating time delays, square wave pulses, or PWM signalsビットトレードワン BitTradeOne ADRSRU4 Relay Control Expansion Board for Raspberry Pi 4 Circuits [Pre-Assembled] 対象RaspberryPi:Zero WH/Model B+/2 Model B/3 Model Bxicoolee xicoolee 4-CH Relay for Raspberry Pi Zero Zero W Zero WH 2B 3B 3B+ 4B Power Relay Expansion Board Module Four Channel 1.Supply voltage:3.3V&5V；Relay allows access to the load:250V/5ASustVita SustVita BLE Development Board with 8 Channel Relay Module, DC 5-30V, Nice for IoT Projects and Smart Home Automation Stable ESP Module: The onboard -WROOM-32E with 4M Byte Flash guarantees dependable performance, providing sufficient memMiZOELEC One 1 Channel 24V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger Power Supply Module for One 1 Channel 24V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger Power Supply Module forUIOTEC 1 PCS 8 Channel Relay Module Interface Board DC 5V for PIC AVR MCU DSP Goshyda Relay Module, 5V Extension Board Module with 8 Relay Controls and Screw Terminal Blocks for 4B/3B+ Relay Module [CONVENIENT CONTROL] - This relay module comes with a relay selection jumper , allowing easy switching of control pins fAnlayliay Anlayliay 1 PCS ABS Clock Relay Module High Precision Clock Circuit Board Time Control Timing Switch 5V The time is divided into hours, minutes, and seconds.Mingzhe 12V 4Ch RS232 Relay Board Remote Control Switch Car Motor [Versatile Interface] Rs232 db9 female interface for easy connectivitysb components SB Components Ardi Relay HAT for UNO R3 Development Board Relay Shield Expansion for Arduino Uno, Mega, ArdiPi & Ardi32 The Ardi Relay Shield is a versatile 4-channel optoisolated relay board that enhances your Arduino projects, allowing yoVENEKA VENEKA 1 PCS 8-Way Relay Module 5V Optocoupler Drive Module Eight-Way Relay Control Board Low Level Trigger There are 4 fixing screw holes around the board, with a hole diameter of 3.1mm, making it easy to install and fix.Lrocaoai 1 Pcs 2 Channel Relay Module 30A High-Low Level Trigger Control Relay Module Relay Switch Board Large load capacity, the relay can connect to maximum 30A, 250V loads.DaXuTech Wireless Remote Switch,Smart Home 433Mhz DC 12V 1CH Wireless Remote Switch Relay Receiver Transmitter Universal Remote C 💡-Very convenient to use, simple wiring diagram connection way.DWEII DWEII 5pcs 5V 2 Channel 5V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with R3 MEGA 2560 Standard interface that can be controlled directly by microcontroller (Compatible with Arduino, 8051, AVR, PIC, DSP, ARMCCYLEZ CCYLEZ 2 Way 5V Relay Drive Module, Onboard Square USB Interface 5V Computer USB Smart Switch Controller PC Relay Expans Onboard square USB interface, stable connection.Lockmaner Lockmaner 1 Pcs 2 Channel Relay Module 30A High-Low Level Trigger Control Relay Module Relay Switch Board High or low level trigger can be by jumper.Waveshare Waveshare Relay Board Compatible with Raspberry Pi to Control High Voltage/High Current Devices The Relay Board gives your Pi the ability to control high voltage/high current devices, easily makes normal home applianPeakloong Peakloong 1 Pcs 2 Channel Relay Module 30A High-Low Level Trigger Control Relay Module Relay Switch Board High or low level trigger can be by jumper.harayaa DC 12V 8 Channel USB Relay Card Module PC Computer Control for Home Convenient and .Xuegier Xuegier 1 Pcs 2 Channel Relay Module 30A High-Low Level Trigger Control Relay Module Relay Switch Board High or low level trigger can be by jumper.Diitao Diitao 6PCS 2 Channel DC5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA 2560 1280 1Denash Relay Module, Isolator Module 24V to 5V PLC Converter Board for Converting Level and Voltage for PNP and NPN to NPN Module wiring has common anode input, common cathode input, and differential input.EMSea EMSea 10-Channel RGB Hub 10 Port PC Chassis Fan Hub CPU Cooling Hub PC Motherboard RGB Fan Extension Cable RGB LED Split The 5V 3-Pin RGB 10-channel hub expand one interface of the motherboard into 10 to meet the needs of multiple devices.Oxtxuzdm Oxtxuzdm 8 Channel Solid Relays Module Board DC5V 12V 24V High/Low Triggering with LED Indicators seamlessly control with our 8 Channel Solid Relays Module Board,featuring High/Low Triggering enhances and reliability iTenNuoDa Timer Switch Module, Relay Module Adjustable Timer Module Size 70 x 26mm Relay Module Interface Control Board with Optoc Specifications: Relay module, size 70 x 26 mm/2.8 x 1 inch, height 18 mm/0.7 inch, center distance of mounting holes 64TenNuoDa Timer Switch Module, Relay Module Adjustable Timer Module Size 70 x 26mm Relay Module Interface Control Board with Optoc Specifications: Relay module, size 70 x 26 mm/2.8 x 1 inch, height 18 mm/0.7 inch, center distance of mounting holes 64TenNuoDa Timer Switch Module, Relay Module Adjustable Timer Module Size 70 x 26mm Relay Module Interface Control Board with Optoc Specifications: Relay module, size 70 x 26 mm/2.8 x 1 inch, height 18 mm/0.7 inch, center distance of mounting holes 64Domary RS485 Relay Module 4 Channel RTU PCB Board with Housing Industrial Control Components DC24V for Industrial Control [Versatile Usage] Ideal for industrial control applications. provides stable and performance in various settings. ensureHilitand Hilitand DC 12V PWM Fan Controller, Four Wire Thermostat PWM Fan Speed Controller Governor Module Temperature Relay For GOOD DESIGN: It integrates manual speed regulation and automatic temperature control and speed regulation function.15% Off DiGiYes DiGiYes CNC Shield V3.0 Extension Board+4Pcs A4988 Stepper Motor Driver with Heat Sinks+4Pcs 1.5M Stepper Motor Cable fo - Use detachable A4988 or DRV8825 compatible with stepping driver, support GRBL 0.8, open source firmware, convert G-codGRARRO GRARRO 8Ch Input/Output Digital Switch TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu Board for PLC Relay, (with Term 2 Working current: 10-16MAEMSea EMSea 10-Channel RGB Fan Hub - 10 Port PC Chassis CPU Cooling Extension Cable Splitter for Desktop Computer Motherboard The 12V 4pin RGB 10-channel hub expand one interface of the motherboard into 10 to meet the needs of multiple devices.31% Off ELEGOO ELEGOO Upgraded 37 in 1 Sensor Modules Kit with Tutorial Compatible with Arduino IDE MEGA 2560 Nano (Microcontroller Boa Perfect for Multi-Project Use, this powerful sensor module kit is 100% Compatible with Arduino IDE and STM32, making it