• Shop by category
  • Powered by eBay

    • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

    1/2/5PCS Slot Type IR Optocoupler Speed Sensor Module 3.3V-5V LM393 for Arduino

    • Item No : 134780054123
    • Condition : New
    • Brand : Unbranded/Generic
    • Seller : czb6721960
    • Current Bid : US $2.99

    • * Item Description

    • Arduino Module. Module DO connected to the relay, composed of the limit switch functions can also be connected to the active buzzer module, composed of the alarm. Module slot unobstructed, receiver tube conduction module DO output low, shelter, DO output high.
    ★ Recommended Products Related To This Item
    ♥ Best Selling Products in this category
  • BEAUTY
  • Skin Care
  • Makeup
  • Nail Care, Manicure & Pedicure
  • Hair Care & Styling
  • FASHION
  • Men's Clothing
  • Men's Shoes
  • Women's Clothing
  • Women's Handbags & Bags
  • Jewelry & Watches
  • KID'S
  • HOME & GARDEN
  • Kitchen, Dining & Bar
  • Home Decor
  • Home Improvement
  • Food & Beverages
  • ELECTRONICS
  • Cell Phones & Accessories
  • Cameras & Photo
  • Computers/Tablets & Networking
  • Consumer Electronics
  • ENTERTAINMENT
  • Music
  • Entertainment Memorabilia
  • DVDs & Movies
  • MORE
  • Sporting Goods
  • Motors
  • Business & Industrial
  • Toys & Hobbies


    • Contact Us

    When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.