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Best Choice SING F LTD 
SING F LTD 4X 1-Channel PC817 Optocoupler Isolation Module (3-5V) Suitable for Photoelectric Isolator Signal Ssolation 1-Channel PC817 Optocoupler Isolation module adopts 5.0 pitch screw terminals for easy wiring.EMSea 
EMSea 2Pcs Optical Isolator Module Voltage to Current Converter Module Input Optoisolator 12V 80KHz 1 Channel PC817 EL81 It is made of premium material, which is not easy to wear and comfortable to touch.Best Value YINETTECH 
YINETTECH 4Pcs VTL5C3 Opto-Coupler VTL5C DIP-4 Audio Opto-Coupler (Vactrols) Linear Opto-Isolator Suitable for Many Guit DIANN 
DIANN 2pcs 4 Channel 12V Relay Module with Optocoupler High or Low Level Trigger Expansion Board Relay Module : Channel: 4 Channel; Working Voltage: DC 12V; Equipped with High-Current Relay, Maximum Load: AC250V 10A,Beufee 
Optocoupler, 4 Channel Optocoupler Isolation Board Optocoupler Isolation Module Optocoupler PC 817 Optoisolator Module PRACTICAL: Optocoupler can realize 3.3V or 5V to control the interface of 3.6 to 24V voltage. After the control terminalDONGKER 
Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Opto ❤Isolation Voltage:more than 3000V . Input Current:50MA(MAX). Operating Current:more than 1MA. Output Maximum Current:50HOBBYIN 
HOBBYIN 5PCS 1 Channel Optocoupler Isolation Module,DC12V Optocoupler Isolation Module EL817 Opto PNP NPN Signal Convert Reliable Optocoupler Isolation: The 5 PCS Optocoupler Isolation Board is designed to provide reliable signal isolation aMingzhe SSR 40AA 40A Solid State Relay Module Dual-Way Input 90- Output 24-480V AC Opto-Isolator LED Display Plastic+Metal [ Design] : Made of plastic and metal, ensures performance in various environments.Generic 10pcs 4N28 DIP-6 FSC Optoisolators Transistor Package contents:4N28 DIP-6 (10pieces )Comimark Comimark 2Pcs Tlp281 4-Channel Opto-Isolator Ic Module for Expansion Board C4K2 Output: OUT1 / OUT2 / OUT3 / OUT4Generic 5PCS/LOT AQH3223 Optocoupler DIP-7 Optoisolator Optocoupler AQH3223 DIP-7 （5pieces）Generic Set of 10 SOP-5 ELM611 ELM611(TA) opto-Isolator optocoupler SMD5 high Package contents:ELM611 SOP-5（10pieces）XYZOOM XYWHPGV Dip 4 Pin Sharp PC817 Optocoupler Photocoupler Optoisolator 20pcs(80148 46ba8 08926 3aa78 d5d0d 26686 Rakstore Rakstore 4pcs TLP281 4-Channel Opto-Isolator IC Module Expansion Board High and Low Level Optocoupler Isolation Function: Use low level to control high level. For example, use the 3V or 5V voltage of the microcontroller to control tSioNS TLP109 Light Coupling into SOP5 optoisolator Coupling 10pieces TLP109 Light Coupling into SOP5 optoisolator Coupling 10piecesBaxnore Baxnore Optocoupler Isolation Board, 4 Channel Optocoupler Isolation Module, PLC Level Converter Board, PCB Isolation Bo Stable Performance: The optocoupler isolator guarantees consistent working performance; It ensures that your systems manReland Sun Reland Sun 10pcs PC827 SOP-8 EL827 TLV827 TLV-827 SOP optoisolator photoelectric coupling 10pcs PC827 SOP-8 EL827 TLV827 TLV-827 SOP optoisolator photoelectric couplingReland Sun 10PCS/LOT TLP281 4 CH 4-Channel Opto-Isolator IC Module for Arduino Expansion Board High and Low Level Optocoupler Isola Reland SunGeneric TLP759 Light Coupling Patch SOP8 optoisolator photoelectric Coupling 10pcs /LOT Package contents:TLP759 SOP8 (10pieces)DBParts DBParts New for 20PCS MOC3061 Zero-Cross DIP-6 Optoisolators Transistor Brand NewMiZOELEC 10pcs/lot MOC3061 M0C3061 DIP-6 Optoisolator - Triac 10pcs/lot MOC3061 M0C3061 DIP-6 Optoisolator - TriacMicroMaker Interface Development Tools Opto-Isolator Breakout BOB-09118MiZOELEC 10pcs/lot 6N138 DIP-8 optoisolator photoelectric Coupling 10pcs/lot 6N138 DIP-8 optoisolator photoelectric couplingDONGKER DONGKER Optocoupler Isolation Board,3.3V to 24V 4-channel PLC Signal Level Voltage Conversion Board for Signal Isolation It can be used for signal isolationGikfun Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino Diy (Pack of 20pcs) AE1143 Gikfun Packing 20pcs OPTOCOUPLER DIP-4 PC817C PC817MachineMid 10pcs/lot PC827 SOP-8 SOP optoisolator photoelectric Coupling 10pcs/lot PC827 SOP-8 SOP optoisolator photoelectric couplingKASILU Dlb0216 Optocoupler Isolation Board, 24V Signal Converter Module Voltage Level Current Converter Module 80KHz 1-Channel Suitable for experiment, electronic designing and DIY etc.DBParts DBParts New for 20PCS 4N25 6Pin Optoisolators Transistor DIP Brand NewMiZOELEC PC827 Light Coupling Patch SOP8 optoisolator photoelectric Coupling 10PCS PC827 Light Coupling Patch SOP8 optoisolator photoelectric Coupling 10PCSMUNEFE MUNEFE Signal Converter Board, Power Conversion Board, Channel Optocoupler Board for Ensuring Fast and Stable Signal Con ROBUST DESIGN: This optical isolation module is made of superior materials that enhance its resisting to damage and ensuDONGKER 8-Channel Optocoupler Isolated Module, DC 24V to 5V PLC-PNP Signal Converter Voltage Converter Adapter Module Its working frequency is 20KHz,which can be used for signal isolation and polarity reversal.DBParts DBParts New for 20PCS MOC3041 Zero-Cross Optoisolators Triac Driver 6-DIP Brand NewFanmusic Topping HS02 USB 2.0 High Performance Audio Isolator with USB-B and Type C Input Compatible with PCM32bit 768kHz DSD512 Fully lsolated Design: The HS02 has a fully isolated design, which does not introduce new interference when the auxiliarComimark Comimark 10Pcs LCR0203 LCR-0203 Linear optocoupler DIP-4 This is LCR0203 LCR-0203 linear optocoupler DIP-4KASILU YHJ322 10Pcs D213 Opto-Isolator ILD213T Breakout Module Optoisolator Microcontroller Board for Z High-Performance Suitable for experiment, electronic designing and DIY etc.Wisoqu 5V 8 Channel Relay Module for Pico, with Photocoupler Isolation and USB Port Boot Pin Power Isolation: This 8 channel relay module provides stable isolation voltage, the isolated terminal does not require aIndependently published Optoelectronics Journal: Blank, Lined Notebook (Softcover) Newnes Analog Circuits Cookbook ibasenice ibasenice 2sets 50mm Stainless Steel Drum Mounting Screws Tension Screws Washers for Snare Drum Lugs 2pcs*2 Floor tom drum-- lightweight, easy to carry and use.