--- product_id: 11494940 title: "KAI-638 Comparable Roll Down Coin Mech Acceptor Coin Selector, for Arcade Game, 8 Liner Etc." brand: "sintron" price: "€ 57.18" currency: EUR in_stock: true category: "Sintron" url: https://www.desertcart.es/products/11494940-kai-638-comparable-roll-down-coin-mech-acceptor-coin-selector store_origin: ES region: Spain --- # Accepts 99% global coins Adjustable sensitivity & VR tuning CPU Anti-string tech KAI-638 Comparable Roll Down Coin Mech Acceptor Coin Selector, for Arcade Game, 8 Liner Etc. **Brand:** sintron **Price:** € 57.18 **Availability:** ✅ In Stock ## Summary > 🎯 Lock in the perfect coin every time—because your game deserves precision. ## Quick Answers - **What is this?** KAI-638 Comparable Roll Down Coin Mech Acceptor Coin Selector, for Arcade Game, 8 Liner Etc. by sintron - **How much does it cost?** € 57.18 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/11494940-kai-638-comparable-roll-down-coin-mech-acceptor-coin-selector) ## Best For - sintron enthusiasts ## Why This Product - Trusted sintron brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Jam-Free Operation:** Innovative coin reject bar mechanism keeps your machine running smoothly without interruptions. - • **Global Compatibility:** Works flawlessly with 99% of worldwide coins and tokens—ready for any arcade or game setup. - • **Customizable Sensitivity:** Fine-tune acceptance thresholds to block counterfeit or damaged coins effortlessly. - • **Counter Meter Connectivity:** Track your earnings in real-time with easy integration to counters. - • **Precision Coin Recognition:** Only your chosen coin gets accepted—no more jams or cheats. ## Overview The Sintron KAI-638 is a high-precision roll-down coin selector designed for arcade games and 8-liner machines. Featuring advanced CPU anti-string technology, it accepts 99% of global coins and tokens with adjustable sensitivity to prevent jams and counterfeit coins. Its mechanism-link coin reject bar ensures smooth operation, while compatibility with counter meters allows real-time tracking of coin intake. Compact and reliable, it’s the go-to coin mech for professional-grade arcade setups. ## Description Descriptions for Coin Selector (1) To change the coin you wish to accept, simply lift up the retaining bracke and insert new sample coin and the mech. will accept only that coin. (2) Accepts coins based on the coins diameter size, thickness and material content. (3) Capable of accepting a wide variety of coins and tokens. (4) Adjustable sensitivity to eliminate acceptance of high quality jam. (5) Anything that does not match the sample coin is automatically rejected. Features (1) CPU Anti-string Programs Electronic Coin Equalizer (2) Mechanism-link with coin reject bar , Flush Clean from coin jam. (3) Select coin based on Diameter, Thickness and Metal content. (4) Switch of Normal Open and Normal Close for signal output of coin validation. (5) 3 ways adjustable triggering Pulse Duration of Timer Switch. (6) VR tuning and sensitivity switch of coin acceptance and improper coins. (7) Allows to connect Counter Meter. ## Features - 👍CPU Anti-string Programs Electronic Coin Equalizer - 👍Capable for accepting 99% worldwide Coins and Tokens. - 👍Mechanism-link with coin reject bar , Flush Clean from coin jam. - 👍VR tuning and sensitivity switch of coin acceptance for improper coins. - 👍Allows to connect Counter Meter. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00C188QRS | | Brand | Sintron | | Customer Reviews | 4.0 4.0 out of 5 stars (47) | | Date First Available | July 8, 2013 | | Hardware Platform | PC | | Item Dimensions LxWxH | 6.69 x 2.76 x 5.51 inches | | Item Weight | 10.4 ounces | | Item model number | 741414652811 | | Manufacturer | Sintron | | Operating System | Mac OS & Windows | | Product Dimensions | 6.69 x 2.76 x 5.51 inches | | Series | KAI-638 | ## Images ![KAI-638 Comparable Roll Down Coin Mech Acceptor Coin Selector, for Arcade Game, 8 Liner Etc. - Image 1](https://m.media-amazon.com/images/I/91HtvJdfqgL.jpg) ## Questions & Answers **Q: Can this machine be programmed for US dimes? (1.35mm/17.5mm)** A: Yes, no problem for quarters and dimes. **Q: How does this mount? And if its a direct screw in does it include the cutout template?** A: This coin acceptor mounts on a flat coin door using four carriage bolts and nuts which are included. It did not come with a template for the holes. I was replacing a similar unit that used the same standard hole layout. **Q: Is there any guide, video or instructions on how to set this up on a raspberry pi 2 for a newbie?** A: Yeah, on the raspberry Pi website or YouTube! **Q: que salida de corriente da el producto? en caso que se pueda conectar a una tarjeta para comunicarse con otra maquina tipo expendedora** A: hi, this is with 5v pulse output. ## Frequently Bought Together - Sintron KAI-638 Comparable Roll Down Coin Mech Acceptor Coin Selector, for Arcade Game, 8 Liner Etc. - TW-389 Anti Finishing Colorful LED Light Coin Mech Acceptor Coins Selector for Arcade Machines/Toy Vending Machines/Slot Machine --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.es/products/11494940-kai-638-comparable-roll-down-coin-mech-acceptor-coin-selector](https://www.desertcart.es/products/11494940-kai-638-comparable-roll-down-coin-mech-acceptor-coin-selector) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-09-06*