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Best Choice KNACRO 
KNACRO I/O Expansion Sensor Shield Module for Arduino UNO R3 Nano V3.0/Nano Pro This IO Expansion Shield is specifically designed to facilitate an easy connection between Arduino Nano and many other dBest Value Comimark 
Comimark 3Pcs PCF8574 PCF8574T I2C 8 Bit IO GPIO Expander Module for Arduino & Raspberry Pi Compatible with Arduino and Raspberry Pi.Reland Sun 
5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module 5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development ModuleWaveshare 
Metal Case with Cooling Fan for Official Raspberry Pi Compute Module 4 IO Board, Breakout 40PIN GPIO Header Easy to Conn This Metal Box is designed for Raspberry Pi Compute Module 4 IO Board, Mini computer chassis, robust and dust-proof, nicWaveshare 
Waveshare Compute Module 5 IO Board, Compatible with All Variants of Raspberry Pi CM5, with PoE Feature, Single Board On Standard CM5 socket and Raspberry Pi 40PIN GPIO header suitable for all variants of Compute Module 5DollaTek 
DollaTek 3Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module Standard interface that can be expanded in a variety of development boardsWaveshare 
Waveshare Mini Base Board Type B Designed for Raspberry Pi Compute Module 4, Only CM4-IO-BASE-B Base Board Included I am the Raspberry Pi Compute Module 4 basic expansion boardUeeKKoo Metal Case Compatible with Raspberry Pi Official Compute Module 5 IO Board, Comes with CM5 Cooling Fan and 40PIN GPIO Ad Metal Case for Official Compute Module 5 IO Board, Comes with CM5 Cooling Fan and 40PIN GPIO Adapter. ( Note: official CWaveshare Waveshare Raspberry Pi Compute Module 4 IO Board with PoE Feature Suitablr for All Variants of CM4 Suitable For Evaluating The Raspberry Pi CM4 Or Being Integrated Into End ProductsReland Sung Nano V3.0 Prototype Shield I/O Extension Board Expansion New Module (Blue) Reland SungReland Sung Nano V3.0 Prototype Shield I/O Extension Board Expansion New Module (Blue) Reland SungMingzhe LCD1602 Adapter I2C Converter Module Solve Sensor Relay Control Board IO Port Problem I2C Interface Backlight Adjustment [Effectively Solve Io Port Shortage] : This adapter effectively solves the problem of insufficient io ports when connectPodazz Podazz 3Pcs PCF8575 Board Module IO Expansion Board Module I2C to 16IO IIC I2C I/O Port Expansion Board 【I2C Addressability】The default I2C address is 0x20, but this can be altered by soldering the A1 and A2 selection pads,Waveshare Waveshare Compute Module 5 IO Board+Case, Compatible with All Variants of Raspberry Pi CM5, with PoE Feature, Bundle wit Standard CM5 socket and Raspberry Pi 40PIN GPIO header suitable for all variants of Compute Module 5AITIAO AITIAO 5Pcs PCF8574T PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module PCF8574 IO expansion chip with I2C interface, 8-bit parallel port outputYOURRYONG 3Pcs DY-SV17F Voice Playback Module IO Trigger USB Download 4MB Serial Port Control Voice Module Voice Playback Module: Enables voice control and playback functionality for your PCUeeKKoo Compute Module 5 IO Board + Case with PoE Feature, Compatible with RPi Compute Module 5 Lite/eMMC, CM5 Kit Comes with Co This is Compute Module 5 Kit, Comes with Compute Module 5 PoE Base Board+ Metal Case + CM5 FAN + Power Supply.ACEIRMC ACEIRMC 3pcs PCF8575 IO Expander Board Module I2C to 16IO IIC I2C I/O Extension Shield Module 16 bit SMBus I/O Ports for for Arduino available library: PCF8575; Working voltage: 2.5 - 5.5VDCNooElec Nooelec SAWbird iO - Premium Dual Ultra-Low Noise Amplifier (LNA) & Saw Filter Module for Inmarsat Applications. 1542MHz SAWbird iO is a self-contained LNA module designed for capturing L-Band signals, particularly Inmarsat AERO and STD-CUeeKKoo Compute Module IO Board with PoE, Composite Breakout Board for Raspberry Pi Compute Module 4S/CM4S / CM3 / CM3L / CM3+ / Compute Module IO Board with PoE Feature, Composite Breakout Board compatible with Raspberry Pi Compute Module 4S / CompJINTAI JINTAI IO Module Board Replacement for Lenovo Ideapad 330S-15ARR 81FB 5C50R27417 IO Board This product is a replacement for ideapad 330S-15ARR 81FB 5C50R27417 IO boardAOICRIE AOICRIE 5PCS PCF8574T PCF8574 IO Expansion Board Module I2C IO Expander Module (5 PCS) ✔I2C interface, I / O expansion module, two I / O scalability 8 I / O (up to 8 simultaneous use the PCF8574 expanded toDollaTek DollaTek PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module Standard interface that can be expanded in a variety of development boardsWINGONEER WINGONEER PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module Standard interface that can be extended in a variety of development boardsDiitao Diitao 2PCS Voice Playback Module,MP3 Player Music Voice Board IO Trigger UART Serial Adapter Control Playback Module Mi DY-SV5W voice playback module,Support MP3, WAV decoding format,Support sampling rate (KHz): 8/11.025/12/16/22.05/24/32/4Reland Sun DY-SV17F Audio Module Mini MP3 Player IO Trigger USB Download Flash Voice Module Reland SunTreedix Treedix 5PCS IO Expansion Module I/O Expansion Module I2C Compatible with AVR STM8 C8051F Arduino The PCF8574 IO expansion board provides universal remote I/O expansion through a two-wire bidirectional I2C bus (serialQCCAN 8PCS PCF8574 IO Expansion Board Module I/O Expander I2C-Bus Evaluation Development Module PCF8574 Blue module function: I2C interface, I/O expansion module, two I/O scalability 8 I/O (up to 8 simultaneous use tNOYITO NOYITO Nano I O Expansion Sensor Shield Module for UNO R3 Nano V3.0 (Pack of 2) This I/O Expansion Shield is specifically designed to facilitate an easy connection between Arduino Nano and many otherYOUMILE Youmile 5pcs PCF8574 IO Expander I/O Expander I2C Evaluation Develop Module with Dupont Cable for Arduino & Raspberry Pi 【Remote Extension】: PCF8574 IO expansion board provides universal remote I/O expansion via the two-wire bi-directional IWonrabai Waveshare MCP23017 IO Expansion Board Expands 16 I/O Pins, Support Use 8 Expansion Modules at The Same Time, up to 128 I ✅ I2C controlled, expands 2 signal pins as 16 I/O pins based on the I2C bus, supports using 8 Expansion Boards at the saVINGVO Remote Io Relay Controller, Ethernet Control Board, Ethernet Remote IO IOT Module, IP30 16 Channel Digital Input Data Ac Wide Applications: Remote IO Relay Controller, Widely used in various industrial automation production, security monitorHiLetgo HiLetgo Pcf8574 Pcf8574T Io Expansion Board I/O Expander I2C Evaluation Develop Module (Pack of 2Pcs) PCF8574T IO Expansion BoardWaveshare Waveshare Dedicated Cooling Fan for Raspberry Pi Compute Module 4 IO Board PWM Speed Adjustment Supports Compute Module 4 IO Board, CM4-IO-BOARD-CASE-AOONO Edge Connector IO Breakout Board for BBC Micro:bit, Microbit Breakout Module 15 connect holes for 3V, GND and 9 I/O ports(include IIC and SPI), you can easily connect alligator clip lines.Waveshare Waveshare MCP23017 IO Expansion Board I2C Interface Expands 16 I/O Pins Allows 8 pcs Stacked and Used at The Same Time A MCP23017 GPIO module, I2C controlled, expands 2 signal pins as 16 I/O pinsShutao 12PCS PCF8574 IO MCU Expansion Board I2C Interface 8bit I/O Expander IIC Bus Evaluation Development Module The PCF8574 IO Expansion Board provides general-purpose remote I O expansion via the two-wire bidirectional I2C-bus (serMiZOELEC Wireless IO I/O Ports CC2540 Bluetooth 4.0 BLE Module Adapter USB Protocol Analysis BTool Packet Sniffer Board Debug Pin Wireless IO I/O Ports CC2540 Bluetooth 4.0 BLE Module Adapter USB Protocol Analysis BTool Packet Sniffer Board Debug PinAITIAO AITIAO 10Pcs PCF8574 IO Expansion Board Module I/O Expander I2C Bus Evaluation Development Module PCF8574 IO expansion chip with I2C interface, 8-bit parallel port outputLT Easiyl LT Easiyl 5Pcs DFPlayer Mini MP3 Player Module Audio Voice Board MP3 Voice Decode Board Supporting TF Card/U-Disk/IO/Ser Supports Multiple Sample Rates: Supports sampling rates of 8/11.025/12/16/22.05/24/32/44.1/48 KHz.DollaTek DollaTek 5Pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module Standard interface that can be expanded in a variety of development boardsWaveshare Waveshare Metal Box Type A Compatible with Raspberry Pi Official Compute Module 4 IO Board Metal Box (A) Designed For Raspberry Pi Official Compute Module 4 IO Board, Comes With Cooling FanUeeKKoo Compute Module 5 PoE Base Board, CM5 IO Board with PoE Feature, Support POE and Type C Power Supply/M.2 NVMe Solid State Compute Module 5 PoE Base Board ( Compute Module 5 IO Board with PoE Feature ) for Compute Module 5 Variants ( All VersiAITIAO AITIAO 10Pcs PCF8575 IO Expander Board Module I2C to 16 IO Extension Module I2C Communication Control 16 bit SMBus I/O P Available library: PCF8575; I2C address: 0x20(default),can be modified by installing A1 and A2.MiiElAOD RPi Compute Module 4 IO Board, Support Multiple Functional interfaces PCIE Slot Package: 1PCS* Compute Module 4 IO BoardWaveshare Mini Base Board for Raspberry Pi CM5 Lite/eMMC Series Module, Compute Module 5 Mini IO Board with CM5 Socket/40PIN GPIO Mini Base Board for Raspberry Pi Compute Module 5 Lite/eMMC series module, with onboard CM5 socket, Gigabit Ethernet RJ4AITIAO AITIAO 5PCS PCF8575 IO EXPANDER BOARD - I2C TO 16 IO PORT IIC I/O EXTENSION SHIELD MODULE DC 2.5-5.5V I2C COMMUNICATION Available library: PCF8575; I2C address: 0x20(default),can be modified by installing A1 and A2.Reland Sun 2.0 inch ILI9225 TFT LCD Module SPI Serial Interface Module 170 * 220 Minimum Occupancy 4 IO Reland SunIO Crest I/O Crest M.2 (B & M-Key) PCIe Interface Single Port Gigabit Ethernet Modules NIC RealTek RTL8111H Chipset Fully compliant with Microsoft NDIS5, NDIS6(IPv4, IPv6, TCP, UDP) Checksum and Segmentation Task-offload (Large send anddomoi domoi DC 12V 24V 16 Input 16 Output RS485 Remote Control Switch PLC IO Expansion Board Modbus RTU Module, Only Board 16 channels output (ULN2803 NPN output)Aswalling Aswalling DC 12V 24V 16 Input 16 Output RS485 Remote Control Switch PLC IO Expansion Board Modbus RTU Module, Only Board 16 channels output (ULN2803 NPN output)CDBAIRUI 2DI+2AI+4DO ME31-AAAX2240 RS485 ModBus Ethernet I/O Network Acquisition Control Module Rail Installation Industrial Grad Hassle-free Protocol,Easy Adaptation It can be directly connected to the existing ModBus system without worrying about tReland Sun Reland Sun 3V 5V Low Control High Voltage 12V 24V 36V E-switch Mosfet Module For Connect IO MCU PWM Control Motor Speed Board use of opto isolated, Completely separated from the 2-terminal voltage.JESSINIE JESSINIE 2Pcs DY-SV17F Voice Playback Module IO Trigger USB Download 4MB Flash Voice Playback Module Serial Port Control DY-SV17F is an intelligent voice module, integrated with IO segmented trigger, UART serial port control, ONE_ Line singlVENEKA VENEKA 5X 8Ch Input/Output Digital Switch TTL LvTTL CMOS RS485 IO Control Module Modbus Rtu Board for PLC Relay, (No Pin 1 Working voltage: DC 12V (6-24V)OutdwellaATV Remote IO Module Compatible with S7-200SMART PLC Distributed IO Analog Input Output Module Expansion(4AI 2AQ,No SB-EBUS) Compatible with S7-200SMART PLCKiRYu DC 12V 24V 16 Input 16 Output RS485 Remote Control Switch PLC IO Expansion Board Modbus RTU Module, Only Board 16 channels Darlington output (ULN2803 NPN output)Lrocaoai 2X DC 12V 24V 16 Input 16 Output RS485 Remote Control Switch PLC IO Expansion Board Modbus RTU Module, Only Board 16 channels output (ULN2803 NPN output)OutdwellaATV Remote IO Module Compatible with S7-200SMART PLC Distributed IO Analog Input Output Module Expansion(8AI 4AQ,No SB-EBUS) Compatible with S7-200SMART PLCSnblzhef Snblzhef DC 5V STM32 4G Networked Dual-Way Relay Relay Development Board Onboard AIR780E Module I/O Port STM32 Developme 4. Onboard blue AIR780E network status indicator;VKLSVAN VKLSVAN 10PCS 4 Channels IIC I2C Logic Level Converter 3.3V-5V Bi-Directional Shifter Module for Arduino(Pack of 10pcs) The bi-directional logic level converter is a small device, which can safely steps down 5V signals to 3.3V and steps upLrocaoai 4X DC 12V 24V 16 Input 16 Output RS485 Remote Control Switch PLC IO Expansion Board Modbus RTU Module, Only Board 16 channels output (ULN2803 NPN output)CDBAIRUI CDBAIRUI 4AI+4AO Modbus TCP/RTU I/O Networking Module ME31-XAXA0404 DC 8-28V 0-20mA/4-20mA RJ45 RS485 Modbus Gateway OLE Hassle-free Protocol,Easy Adaptation It can be directly connected to the existing ModBus system without worrying about tOutdwellaATV Expansion Modules Compatible with Profinet Remote Distribution IO Module, DI DO AI AO PT100 Compatible with S7-200/1200/ Compatible with Profinet remote distribution IO moduleOutdwellaATV Expansion Modules Compatible with Profinet Remote Distribution IO Module, DI DO AI AO PT100 Compatible with S7-200/1200/ Compatible with Profinet remote distribution IO moduleOutdwellaATV Expansion Modules Compatible with Profinet Remote Distribution IO Module, DI DO AI AO PT100 Compatible with S7-200/1200/ Compatible with Profinet remote distribution IO moduleVoniecop Voniecop 2X DC 12V 24V 16 Input 16 Output RS485 Remote Control Switch PLC IO Expansion Board Modbus RTU Module, Only Boa open "close" "Momentary" "Self-locking" "Interlock" "Delay" 6 CommandsOutdwellaATV Expansion Modules Compatible with Profinet Remote Distribution IO Module, DI DO AI AO PT100 Compatible with S7-200/1200/ Compatible with Profinet remote distribution IO moduleOutdwellaATV Expansion Modules Compatible with Profinet Remote Distribution IO Module, DI DO AI AO PT100 Compatible with S7-200/1200/ Compatible with Profinet remote distribution IO moduleOutdwellaATV Expansion Modules Compatible with Profinet Remote Distribution IO Module, DI DO AI AO PT100 Compatible with S7-200/1200/ Compatible with Profinet remote distribution IO moduleOutdwellaATV Expansion Modules Compatible with Profinet Remote Distribution IO Module, DI DO AI AO PT100 Compatible with S7-200/1200/ Compatible with Profinet remote distribution IO moduleOutdwellaATV Remote IO Module Compatible with S7-200SMART PLC Distributed IO Analog Input Output Module Expansion(4AQ,Add SB-EBUS) Compatible with S7-200SMART PLCOutdwellaATV Remote IO Module Compatible with S7-200SMART PLC Distributed IO Analog Input Output Module Expansion(16AI,Add SB-EBUS) Compatible with S7-200SMART PLCOutdwellaATV Remote IO Module Compatible with S7-200SMART PLC Distributed IO Analog Input Output Module Expansion(32AI,Add SB-EBUS) Compatible with S7-200SMART PLCISTOVO ISTOVO DC 12V 24V 16 in 16 Out RS485 Remote Switch PLC IO Expansion Board Modbus RTU Multifunctional Convenience Module N4D3E16 DC 12V 24V 16 In 16 Out Rs485 Remote Control Switch Plc Io Expansion Board Modbus Rtu ModuleLONELY BINARY Lonely Binary 12-Pack Logic Level Converter Bi-Directional Module Shifter 3.3V to 5V I2C SPI Voltage Shifter for Arduino ✅ 12× Logic Level Shifters – Includes twelve bi-directional modules for safely shifting signals between 3.3V and 5V deviOutdwellaATV PLC Profibus DP Expansion Module Digital Analog Input/Output RTD Thermocouple PT100 Remote IO Profibus DP(DP4055 8DI 8DO High-quality PLC Profibus DP Expansion ModuleOutdwellaATV PLC Profibus DP Expansion Module Digital Analog Input/Output RTD Thermocouple PT100 Remote IO Profibus DP(DP6505 5TC 5DO High-quality PLC Profibus DP Expansion Moduleeiuie Digital Analog I/O Module DA501 1SAP250700R0001 🔎Mfr. Part #: 1SAP250700R0001 DA501 A4Waveshare Waveshare Mini-Computer Advanced Version, Compatible with Raspberry Pi Compute Module 4, Including CM4-IO-BASE-C+Aluminu This CM4-IO-BASE-BOX-C includes the CM4-IO-BASE-C Base Board, Aluminum Alloy case, Fan-4010-PWM-5V, Antenna connector ruSenzooe 5PCS Mini MP3 Player Module MP3 Voice Decode Board Supporting TF Card U-Disk IO/Serial Port/AD 5PCS Mini MP3 Player Module MP3 Voice Decode Board Supporting TF Card U-Disk IO/Serial Port/ADCryfokt MOSFET Module, with Indicator MOS Tube Module, Quick Connection Strong Anti-Interference Ability for High Power Equipmen 4. Onboard screw terminal block for quick wiring.Madifei AU 2pcs DY-SV5W Audio Playback Module for MP3 Music Player Audio Playback Amplifier 5W SD/TF Card Integrated RT I/O Trigger 2pcs DY-SV5W Audio Playback Module for MP3 Music Player Audio Playback Amplifier 5W SD/TF Card Integrated RT I/O TriggerACEIRMC ACEIRMC HC-SR04 Ultrasonic Sensor Distance Module for Arduino UNO MEGA2560 Nano Robot XBee ZigBee by ElecRight （5 PCS） HC-SR04 Ultrasonic Sensor Distance Module: using IO trigger for at least 10us high level signalDIANN DIANN PN532 NFC NXP RFID Module V3 Kit Near Field Communication Reader Module Kit I2C SPI HSU with S50 White Card Key Ca Power Voltage: 3.3V-5VCoolwell CM4-IO-BASE-A + USB HDMI Adapter, Mini Base Board for Raspberry Pi Compute Module 4 with More USB and HDMI Connectors More USB And HDMI Connectors Via FFCXIITIA XIITIA 3pcs LD2410C Human Presence Radar Sensor Module HLK-LD2410 Sensor Module LD2410 Millimeter Wave Radar Sensor Modu ★24GHz ISM band, the farthest sensing distance is up to 5 meters, the detection angle is large, and the coverage range cAnmbest Anmbest 5PCS YX5200 DFPlayer Mini MP3 Player Module MP3 Voice Decode Board Supporting TF Card U-Disk IO/Serial Port/AD f The DFPlayer perfectly integrates hard decoding module, which supports common audio formats such as MP3, WAV and WMA. BeUeeKKoo Mini Nano Base Board for Compute Module 5 Lite/eMMC, Same Size As CM5 Compact Size and Fully Functional, with Multiple P Nano Base Board (A) for Compute Module 5 Lite / eMMC Same Size As The CM5. Suitable For Evaluating The Raspberry Pi CM5Alesis Alesis Module Mount | Electronic Percussion Mounting Plate for ControlPad, PerformancePad & Trigger iO The ultimate companion for your multipad – Mounting plate for Alesis electronic percussion instruments - The ultimate soXYGStudy XYGStudy IMX219-83 Stereo Binocular Camera Sensor Module 3280x2464 8MP AI Depth Stereo Vision Dual IMX219 Supports Raspb Part Number: IMX219-83 Stereo Camera (You need to buy extra Pi5-Camera-Cable-200mm / 300mm / 500mm for Raspberry Pi 5)ST SHILLEHTEK ShillehTek 1.8 Inch TFT LCD Display Module, 128x160 Resolution, Dual-Side Soldering, 4 IO for Arduino, Raspberry Pi, ESP [HIGH-RESOLUTION DISPLAY]: Features a 1.8-inch TFT LCD with a 128x160 pixel resolution, delivering clear and vibrant visUeeKKoo Mini Base Board Compatible with Raspberry Pi Compute Module 5 Lite/eMMC Series, with Color-Coded 40PIN GPIO/M.2 M Key PC Version Comparison: This is CM5-IO-BASE-B Version. It features EEPROM and encryption chip and M.2 M KEY PCIe, which is dUeeKKoo Mini Base Board Compatible with Raspberry Pi Compute Module 5 Lite/eMMC Series, CM5 Base Board with Color-Coded 40PIN GP This is Mini Base Board (A) with standard CM5 socket and color-coded RPi 40PIN GPIO header, compatible with Compute ModuVGOL VGOL High Power MOS FET Trigger Switch Drive Module 0-20KHz PWM Electronic Switch Control Board DC 5V-36V 400W 10Pcs Using dual MOS parallel active output, lower internal resistance, larger current and strong power.Waveshare Dedicated Aluminum Heatsink Compatible with Raspberry Pi Compute Module 5 (CM5) / Compute Module 4 (CM4), CM4/ CM5 Heats Dedicated Aluminum Heatsink for Raspberry Pi Compute Module 4：Dedicated aluminum heatsink, corrosion / oxidation resistiDIGISHUO DIGISHUO 4Pcs Game Joystick Sensor Game Controller Sensor JoyStick Breakout Module for Ar duino PS2 Raspberry Pi ※The module is an ideal addition to your next Ar-duino science project or prototypeYIQFOCA 5 Set 3V 1 Channel Relay Power Switch Board, High Level Driver Optocoupler Module Isolated Drive Control Board for ESP82 You will recevie 5Pcs 3v Relay 1 Channel power switch module compatible with 10A 250VAC and 10A 30VDC load.5pcs * 2.5 mmQunqi Qunqi IIC/I2C/TWI 1602 Display Module 16x2 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560 100% Brand NewWaveshare Waveshare Mini Base Board (B), Compatible with Raspberry Pi Compute Module 5, Onboard EEPROM and Encryption Chip 8GB RAM, 16GB eMMC Flash, with W-Fi;Rich WiKi Resources: We provide official Wiki resources, please contact us for more