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      8CH Opto Isolated Level Converter Module NPN PNP 3.3V 5V 12V 24V For Arduino PLC Raspberry Pi MCU
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      8CH Opto Isolated Level Converter …
      $8.92
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      AliExpress
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      Treedix Relay Module With Optocoupler Isolation Relay Control Board Compatible With Arduino UNO R3 Raspberry Pi DSP AVR PIC ARM (12V Relay 8 Channel)
      Treedix Relay Module With Optocou…
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      Amazon.com
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      1-10PCS TLP281 4-Channel Opto-Isolator IC Module For Arduino Expansion Board High And Low Level
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      1-10PCS TLP281 4-Channel Opto-I…
      $0.87
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      4-Channel Opto-Isolator Ic Module Arduino High And Low Level Expansion
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      4-Channel Opto-Isolator Ic Module …
      $3.19
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      Optocoupler Isolation Board Voltage Converter Isolated Module PLC Signal Level Board NPN Output 1.8V 3.3V 5V 12V 24V PNP Output
      Optocoupler Isolation Board Voltag…
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      AliExpress
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      4-Channel Opto-Isolator IC Module Arduino High And Low Level Expansion Board
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      4-Channel Opto-Isolator IC Module …
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      4-Channel Opto-Isolator IC Module …
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      4-Channel Opto-Isolator IC Module …
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      4-Channel Opto-Isolator IC Module …
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      8 Channel Optocoupler Isolation Bo…
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      Optocoupler Isolation Module , 4 Ch…
      $109.78
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      Youngneer 5V Relay Board Raspbe…
      $91.88
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      12V 80Khz 1 Channel Optocoupler I…
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      NOYITO Optocoupler Isolation MO…
      $65.88
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      20Khz Optocoupler Isolation Board, …
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      TLP281 4-Channel Opto-Isolator IC …
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      DAOKI 5Pcs Expansion Board TLP…
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      4 5V Relays With Optocoupler Isolat…
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      1-Bit AC 220V Optocoupler Isolatio…
      $5.27
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      Optocoupler Isolation Module 1/3/8 …
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      Isolator Module, 8 Channel Optical I…
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      NOYITO 4-Channel Optocoupler Iso…
      $73.00
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      For MOS Optocoupler Isolation Driv…
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      6 Channel Rpi Relay Module Expan…
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      16 Channel Relay Shield Module R…
      $9.20
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      10PCS 4-Channel Opto-Isolator IC …
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      8 Bi-Direction IO I2C Expansion Bo…
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      2 Channel DC 5V Relay Module Wit…
      $5.82
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      ARCELI Pack Of 5 Optocoupler Mo…
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      ibspot
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      DST-1R4P-P Optocoupler Isolation …
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      Stlxy 1-Bit AC 220V Optocoupler Iso…
      $2.20
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      8 Bi-Direction IO I2C Expansion Bo…
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      Alexnld.com
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      5V 3-Channel Relay Hats Expansio…
      $15.00
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      Raspberry Pi Dual Channel Isolate…
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      For Raspberry Pi Pico Terminal Blo…
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      Stock Raspberry PI AI KIT HAILO8…
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