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Best Choice SING F LTD 
SING F LTD 4X 1-Channel PC817 Optocoupler Isolation Module (12V) Suitable for Photoelectric Isolator Signal Ssolation an 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 Applications: Commonly used in tremolo and vibrato circuits within guitar pedals and amplifiers to create distinctive moSING 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.DONGKER 
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:50DIANN 
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,TYSQXQ 
24V Converter Module 80KHz Photoelectric Optoisolator 12V PNP NPN Signal Converter PC817 Optocoupler Optoisolator 24V Converter Module 80KHz Photoelectric Optoisolator 12V PNP NPN Signal Converter PC817 Optocoupler OptoisolatorPhefop Phefop 40AA 40A Solid State Relay Module, Dual-Way SCR Input, LED Display, AC-AC Control, Opto-Isolator, Isolation, CE C [High Performance Scr Input] Dual-way scr input with zero starting voltage and ioff for instant activation.Jadpes Industrial-Grade Opto-Isolator,Jadpes 1pc Industrial Grade RS485 Signal Repeater Amplifier Isolated Distance Extender fo Built-in high-quality DC/DC isolated power supply module realizes electrical isolation betweenMorelian Morelian 40A Solid State Relay Module, AC-AC Input 90- Output 24-480V, Opto-Isolator for Dual-Way SCR Input, LED Light d [High Voltage ] Withstands isolation voltage of between input and output, ensuring durability and longevity.Generic 10PCS AQH3223 Optocoupler Optoisolator DIP-7 Good AQH3223 DIP-7 （10pieces）Comimark Comimark 2Pcs Tlp281 4-Channel Opto-Isolator Ic Module for Expansion Board C4K2 Output: OUT1 / OUT2 / OUT3 / OUT4HOBBYIN 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 aGeneric 5PCS/LOT AQH3223 Optocoupler DIP-7 Optoisolator Optocoupler AQH3223 DIP-7 （5pieces）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 10piecesReland 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 couplingGeneric Set of 10 SOP-5 ELM611 ELM611(TA) opto-Isolator optocoupler SMD5 high Package contents:ELM611 SOP-5（10pieces）DBParts DBParts New for 20PCS MOC3061 Zero-Cross DIP-6 Optoisolators Transistor Brand NewRASTKY RASTKY Solid State Relay 40A Module with Opto-Isolator, CE Certified, Ideal for Machinery Control, for Professional Use [ AND EFFICIENT] Zero starting voltage and Ioff ensures immediate response and efficient operation of this solid state rMingzhe 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.Fdit Fdit Solid State Relay 40A ACAC, Dual SCR -Pang, OPTOISOLATOR, CERTIFLIFIMY CER [Sustainable design] The elastic structure is successful for the aging test of the fiscal currentReland Sun 10PCS/LOT TLP281 4 CH 4-Channel Opto-Isolator IC Module for Arduino Expansion Board High and Low Level Optocoupler Isola Reland SunZenithAur ZenithAur PWM Driver Module with Opto-Isolator for MCU IO Signal Isolation, a Low Voltage 3V 5V Controlled MOSFET Switch HIGH VOLTAGE SWITCHING: Employs a MOS transistor to let a 3V / 5V low voltage signal manage high voltage devices. This FGeneric TLP759 Light Coupling Patch SOP8 optoisolator photoelectric Coupling 10pcs /LOT Package contents:TLP759 SOP8 (10pieces)Baxnore 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 manDBParts DBParts New for 20PCS 4N25 6Pin Optoisolators Transistor DIP Brand NewDBParts DBParts New for 20PCS DIP-6 MOC3020 Optoisolators Transistor Output Brand NewDONGKER 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 PC817DBParts DBParts New for 50PCS EL817C PC817 PC817C FL817C FL817 EL817 DIP-4 Optoisolators Transistor Brand NewMUNEFE 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 ensuYechiry Yechiry 40A Dual-Way Solid State Relay Module for Real-time AC-AC Control, CE Certified, Suitable for Industrial Use [HIGH-PERFORMANCE RELAY MODULE] Dual-way SCR input ensures immediate response with zero starting voltage and zero Ioff.BHHVO BHHVO MRI-05D48 10 Pieces Input 5V DC Optoisolator Interface Relay Module Output 3-48V DC Solid State Relay DC Light Sig RelaysCryfokt Cryfokt 40A Solid State Relay Module with Zero Volt Starting Voltage, Isolation Withstand, for DIY Projects [HIGH PERFORMANCE SOLID STATE RELAY] Dual-way SCR input allows zero starting voltage and Ioff, ensuring reliable operatiXiuganpo Xiuganpo 40A Solid State Relay Module with Zero Volt Starting Voltage, Isolation Withstand, for DIY Projects [HIGH PERFORMANCE SOLID STATE RELAY] Dual-way SCR input allows zero starting voltage and Ioff, ensuring reliable operatiFanmusic 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 auxiliarWisoqu 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 aPOENVFPO POENVFPO Dual-Way SCR Input Solid State Relay Module 40A AC-AC Relay for Commercial Use, 24-480V [ ACTIVATION] Starts at zero volt for quick responseJeffergarden Jeffergarden Solid State Relay AC AC Module, High Isolation Voltage Technology, Real Time Working Status LED Display, 40 Real Time Monitoring: LED display indicates working status, allowing for easy monitoring of relay performance.Independently published Optoelectronics Journal: Blank, Lined Notebook (Softcover) Newnes Analog Circuits Cookbook Used Book in Good ConditionNewnes Analog Circuits Cookbook Used Book in Good Condition