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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 Module – PC-Controlled HID Relay Board for Home Automation Device Switching [Multi-Channel Relay Board] Equipped with 8 relays SRD-05VDC-SL-C, allowing control of multiple circuits through a singlBest Value Mingzhe 
USB Relay Module High Performance MCU PC USB Smart Control Switch Jog Self Locking [High-performance Microcontroller Chips] - Equipped with onboard high-performance microcontroller chips for efficient anCasalytics 
G8P-1A4P Fully-Sealed PCB Relay (Set of 2) 12VDC 30A - 4Pins 30A 250VAC Relay for PC Board or Panel-Mounted Applications Fully-Sealed PCB Relay: The G8P-1A4P relay is fully-sealed, providing excellent protection against dust, moisture, and oCHENBO 
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 interfacesOVAQUIXI 
OVAQUIXI DC 36V USB Control Switch Relay Module Easy-to-Use PC Relay Module Expansion Board for Precise Computer Control [PLUG-AND-PLAY DESIGN] Enjoy a hassle- setup with the onboard control chip for easy use and convenience.ECSiNG 
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 thatECSiNG ECSiNG SRD-09VDC-SL-C 5-Pin Terminals 9 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 thatSG Store SG Store 10pcs PCB Relay Socket 40A 5Pin Connector Suitable for Plug-in Relay Control Circuit Product size: The product is 27mm long, 24mm wide and 14.5mm wide. Manual measurements, please allow slight errors.Qezodsx Qezodsx One Channel Relay - Development Board Single Relay Module DC 7-60V Power Supply for Home Appliance Accessories 1. On-board and stable --32E module, capacity 4M Flash;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 humidityTiiyee 4 Channel Optocoupler Relay Module, Board High and Low Trigger Module with Isolation Support High/Low Level for Automati High and Low Level Controllable: Optocoupler relay module with a jumper cap, you can choose a low level control or a higDWEII 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, ARMSpicurity 2PCS DC 12V 8-Channel USB Relay PC Computer Control 2PCS DC 12V 8-Channel USB Relay PC Computer ControlMiZOELEC 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 RelaysYjcnelcr Yjcnelcr 4 Channel 5V 12V 24V Relay Board USB Connection Intelligent Home Relay Controller for PC Automation Projects Our 4-Channel 5V 12V 24V USB Control Switching Relay Module allows for seamless automation. Equipped with stable on-boarAOICRIE 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 opeYjcnelcr Yjcnelcr 4 Channel 5V 12V 24V Relay Board USB Connection Intelligent Home Relay Controller for PC Automation Projects Our 4-Channel 5V 12V 24V USB Control Switching Relay Module allows for seamless automation. Equipped with stable on-boarQIEIEI QIEIEI ULN2803 5V 12V 24V 4CH USB Control Relay Module Smart Switching for PC Automation and Expansion Board Hassle-free automation with our 4 Channel 5V 12V 24V USB Control Switching Relay Module. Features stable USB and high coPodazz Podazz 5Pcs DC 1-Channel Optocoupler 3V/3.3V Relay High Level Driver Module, Isolated Driver Controller Board for Arduin 【Product Parameters】30VDC 250VAC load with high current relays, AC250V 10A ; DC30V 10A, each relay has normally open andPodazz Podazz 5Pcs DC 1-Channel Optocoupler 3V/3.3V Relay High Level Driver Module, Isolated Driver Controller Board for Arduin 【Product Parameters】30VDC 250VAC load with high current relays, AC250V 10A ; DC30V 10A, each relay has normally open andQIEIEI QIEI 4 Channel USB Control Relay Module ULN2803 5V 12V 24V Intelligent Switching for PC Automation and Expansion Board Seamlessly automate with our 4 channel 5V 12V 24V USB control switch relay module. Stable onboard USB and high control cKUNLONGSKY AC 220V/DC 5-30V Power Supply WiFi Bluetooth BLE Four-Way Relay Module - Development Board 1/O Port 2: Onboard and stable --32E module, large-capacity 4M FlashXiuxin Xiuxin 2pcs 5V 8 Channel Relay Module Board for Arduino PIC AVR DSP ARM 2pcs/lot 8 Channel relay module board, Working voltage: 5VDWEII 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 CurrentSorandy 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 controlSnblzhef Snblzhef DC 12V 4 Channel RS232 Relay Board PC USB DB9 Interface Relay Module Serial Port Remote Control Switch for Moto Four-channel serial relay:Snblzhef Snblzhef DC 12V 4 Channel RS232 Relay Board PC USB DB9 Interface Relay Module Serial Port Remote Control Switch for Moto Four-channel serial relay:Diyeeni Diyeeni USB Switch Module, 2-Channel 5V Computer USB Smart Switch Controller, PC Relay Drive Module Expansion Board, Rel Onboard USB interface, stable connection.Diyeeni Diyeeni USB Switch Module, 2-Channel 5V Computer USB Smart Switch Controller, PC Relay Drive Module Expansion Board, Rel Onboard USB interface, stable connection.Jelquix Jelquix USB Smart Relay Controller Module for PC, Grade 5V 2-Channel PC Relay Drive Board for XP 32/64-bit System [HIGH PERFORMANCE USB CONTROL CHIP] Utilizes an imported high-performance USB control chip for reliable performance.WMYCONGCONG WMYCONGCONG 5 PCS 2 Channel 12V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with Raspberr 12V 2 channel relay module, can be controlled by any 12V digital output from your microcontroller.XIAOQENAN 4 Channel USB Relay Module 5V 12V 24V Intelligent Switching Controller for PC and Automation System Seamlessly automate with our 4 channel 5V 12V 24V USB control switch relay module. Stable onboard USB and high control cT TOOYFUL USB Eight Channel 8 Relay Switch Output Module Board PC Computer Controller Using /OFF switching electrical devices for , , solenoids etc.YDuupxe YDuupxe USB Control Switch, 2 Channel Relay Module with PCB Board, for XP 32 Bit Computer PC Intelligent Control (USB Sw [Plug and Play Technology] No need for additional drivers—compatible with systems out of the box. simply connect via theYOUMILE Youmile RC Snubber/Absorption Circuit Module, Relay Contact Protection Relay Thyristor Resistance Surge Thyristor, DC 5- Applicable Load: Suitable for AC or DC 5-400V inductive load (load less than 1000W) to protect relay contacts or thyristSorandy 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, higMiZOELEC 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 Controleletechsup DC 12V 24V 2Ch DB9 UART Relay Module RS232 Serial Port Switch Board for PC PLC Motor LED PTZ (12V) Brand Name : eletechsupeletechsup DC 12V 24V 2Ch DB9 UART Relay Module RS232 Serial Port Switch Board for PC PLC Motor LED PTZ (24V) Brand Name : eletechsupNOYITO NOYITO 2-Channel Micro USB Relay Module USB Smart Control Switch USB Intelligent Control Switch (2-Channel Micro USB) NOYITO 2-Channel Micro USB Relay Module is equipped with a stable USB to serial port chip and a microcontroller. It canOdorkle Odorkle 4 Channel Relay Module, 5V 4 Channel Relay Module, 5V PC Control Switch Expansion Board USB with Overcurrent EQUIPPED WITH CHIP AND CONTROLLER:4 channel micro USB relay module has stable USB to serial port chip and microcontrolleClisted Clisted 1 PCS Relay Module Board with Optocoupler Self-Locking Timing Relay DC 8V-36V 4 Channel 3. DC 8V-36V wide voltage input, with power supply anti-reverse connection function, not damage the module due to wrongOVAQUIXI OVAQUIXI USB Control Switch Relay Module Plug and Play PC Control Relay Module Expansion Board for Reliable Electrical C [SIMPLE AND EFFICIENT] Utilize the USB Control Switch Relay Module effortlessly with its drive- operation and plug-and-pReland Sun 4-Way 5V Relay Module Control Expansion Board Standard shield interfaces and shapes.HiSport HiSport T9AS1D12-12 Power Relay 12VDC 30A SPST-NO PCB Compatible with PC Board or Panel-Mounted Applications High-Capacity Power Relay: Handles demanding loads up to 30A @ 240VAC with a 12VDC coil, featuring a reliable SPST-NO (SLiyeehao MCU PC USB Control Relay Board, High-Performance Microcontroller Chips USB Control Relay Module, for Home Industry 100% brand new and high quality.Loqrwe Loqrwe DC 12V 4 Channel RS232 Relay Board PC USB DB9 Interface Relay Module Serial Port Remote Control Switch for Motor 2. Standby current (all relays closed) 18MA, 1-way relay "open" 50MA, 2-way relay "open" 81MA, 3-way relay "open" 110MA,Swpeet Swpeet 450Pcs Computer Screws Motherboard Standoffs Assortment Kit for Mainboard, Hard Drive, Fan, Power Supply DIY PC I 💯 【 What You Get 】------ In this kit, You will get 450Pcs Computer Screws Motherboard Standoffs Screws Assortment Kit,TIKATARER TIKATARER 2 Channel USB Relay Module Intelligent Control Switch for PC Computer, Sport Equipment PCB Board Production fo 【EASY TO USE】No driver installation required for system, thanks to technology. 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Standby current (all relays closed) 18MA, 1-way relay "open" 50MA, 2-way relay "open" 81MA, 3-way relay "open" 110MA,Dcnhfdsw Dcnhfdsw DC 12V 4 Channel RS232 Relay Board PC USB DB9 Interface Relay Module Serial Port Remote Control Switch for Moto 2. Standby current (all relays closed) 18MA, 1-way relay "open" 50MA, 2-way relay "open" 81MA, 3-way relay "open" 110MA,RIZGHWOY RIZGHWOY USB Control Switch Relay Module Efficient Computer PC Control Relay Module Expansion Board for High Precision E [DRIVE- OPERATION] The USB Control Switch Relay Module features an onboard control chip, making it plug and play with noEacam 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.Dcnhfdsw Dcnhfdsw 8 CH RS232 Relay Board PC USB UART DB9 Remote Control Switch for PLC Smart Home Garage Door Car Farm Motor for Standby current 16MA.LONELY 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 wiCryfokt Cryfokt WiFi Remote Relay Module Powerful 4 Channel Control Board for Smart Home DC5V, 7-28V [REMOTE RELAY CONTROL] Take charge of the relays remotely through mobile app, ensuring effortless operation from anywherDcnhfdsw Dcnhfdsw 8 CH RS232 Relay Board PC USB UART DB9 Remote Control Switch for PLC Smart Home Garage Door Car Farm Motor for Relay load voltage: DC 1-100V or AC85-265V.HDPQNHWA 8DI-8DO Industrial-Grade Multi-Function USB Relay Board PC UART COM Switch Module with Input Indicator Light DC 12V 24V( ApplicationsLrocaoai 2X 8Ch Input/Output Digital Switch TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu Board for PLC Relay(with Terminal) 1 Working voltage: DC 12V (6-24V)Lrocaoai 2X 24 Pins ATX Benchtop Board Computer Pc Power Supply Breakout Adapter Module 4. With output protection fuse,four groups correspond to four road output.HaloVerde HaloVerde USB Control Relay Board with Onboard Chip and LED Status Indicators, a Serial Port Control Relay Module with J ADVANCED CHIPSET: Incorporates a high performance MCU and a USB control chip to manage commands and ensure stable connecHDPQNHWA 8DI-8DO Industrial-Grade Multi-Function USB Relay Board PC UART COM Switch Module with Input Indicator Light DC 12V 24V( Applicationselechawk 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 Fkivrimlarv Circuit Board Cleaner | 100ml Gentle Stain Remover,Deep Cleaning Spray Stain Remover - for PC Desktop Sensor Electronics Time-Saving Instrument Care: Featuring a quick-evaporating and fast-drying formula, this electronic contact cleaner miniGeneric 4 Channel USB Control Relays Module ULN2803 5V 12V 24V Intelligent Switching for PC Automation and Expansion Board seamlessly automation with our 4 Channel 5V 12V 24V USB Control Switching Relays ModuleFeatures stable onboards USB andGeneric 4 Channel USB Control Relays Module ULN2803 5V 12V 24V Intelligent Switching for PC Automation and Expansion Board seamlessly automation with our 4 Channel 5V 12V 24V USB Control Switching Relays ModuleFeatures stable onboards USB andGeneric 4 Channel USB Control Relays Module ULN2803 5V 12V 24V Intelligent Switching for PC Automation and Expansion Board seamlessly automation with our 4 Channel 5V 12V 24V USB Control Switching Relays ModuleFeatures stable onboards USB andDiitao Diitao 6PCS 2 Channel DC5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA 2560 1280 1Wlpdkptg Wlpdkptg DC 12V 4 Channel RS232 Relay Board PC USB DB9 Interface Relay Module Serial Port Remote Control Switch for Moto 2. Standby current (all relays closed) 18MA, 1-way relay "open" 50MA, 2-way relay "open" 81MA, 3-way relay "open" 110MA,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.Loqrwe Loqrwe 8 CH RS232 Relay Board PC USB UART DB9 Remote Control Switch for PLC Smart Home Garage Door Car Farm Motor RS232 DB9 female interface.Eujgoov 2 Channel DC Relay Module Relay Switch Board, Serial Relay Switch Relay to RS232,2 Channel Relay Switch Module Serial Po Stable and :The relay switch board with capacitor filter circuit, which has improved stability.Pqredg Pqredg 8 CH RS232 Relay Board PC USB UART DB9 Remote Control Switch for PLC Smart Home Garage Door Car Farm Motor Standby current 16MA.GRARRO GRARRO 8Ch Input/Output Digital Switch TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu Board for PLC Relay, (with Term 2 Working current: 10-16MAGRARRO GRARRO 8Ch Input/Output Digital Switch TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu Board for PLC Relay, (with Term 2 Working current: 10-16MAYIGZYCN YIGZYCN Channel USB Control Relay Module ULN2803 5V 12V 24V Intelligent Switching for PC Automation and Expansion Board Our 4 Channel 5V 12V 24V USB Control Switching Relay Module allows for seamless automation. 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