--- product_id: 111083923 title: "CableMax? RS-232 LED link Tester DB-9 Male to DB-9 Female" brand: "cablemax" price: "S/.261" currency: PEN in_stock: true reviews_count: 5 category: "Cablemax" url: https://www.desertcart.pe/products/111083923-cablemax-rs-232-led-link-tester-db-9-male-to store_origin: PE region: Peru --- # CableMax? RS-232 LED link Tester DB-9 Male to DB-9 Female **Brand:** cablemax **Price:** S/.261 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** CableMax? RS-232 LED link Tester DB-9 Male to DB-9 Female by cablemax - **How much does it cost?** S/.261 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/111083923-cablemax-rs-232-led-link-tester-db-9-male-to) ## Best For - cablemax enthusiasts ## Why This Product - Trusted cablemax brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Introduction: The DB9 Tester is the easiest way for you to test the connection on any male or female 9 Pin Serial connections. This adapter allows you to monitor the status of your connections by marking them with LEDS, which flash when there is activity on the pins. This device is easy to install, it features a Plug Play Easy test RS 232 Host to Device link. Pin Assignments: DB 9 / DB25 Pin assignment Pin1 / Pin8 : DCD Pin2 / Pin3 : RXD Pin3 / Pin2 : TXD > OUT Pin4 / Pin20 : DTR > OUT Pin5 / Pin7 : GND Pin6 / Pin6 : DSR Pin7 / Pin4 : RTS > OUT Pin8 / Pin5 : CTS Pin9 / Pin22 : RI Additional Features Specifications: RS 232 DTE connecter : DB9 M RS 232 DCE connecter : DB9 F Data rate : Up to 200 K bps With GND Shell Test's LED Single / TTL out 1 LED appear Green (V ) Single / TTL out 0 LED appear Red (V+) Housing : Plastic Weight : 55g Dimensions (L W H) : 45 35 21 ( mm ) body OS Support: Windows 98, Me, XP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 Linux and Mac OS 10.X Review: 通信されているかどうかの確認のために購入しました。 - シリアルのポートから先で通信できているかを確認するために購入したのですが、問題なく機能し、重宝しています。 Review: Absolute must have for communication debugging. - Works great for debugging PLC communication issues. I was chasing a ghost issue on an integrated PLC for a stationary battery backup system and this device showed exactly why the issue was happening. My com link cable had a broken wire at one end and this device instantly showed the result of it and finally put the ghost to rest after a quick cable swap. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004OT995U | | Best Sellers Rank | #179,203 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #498 in Network & Cable Testers | | Brand | CABLEMAX | | Brand Name | CABLEMAX | | Compatible Devices | Charging Adapter | | Connector Type | USB Type C | | Current Rating | 10 Amps | | Customer Reviews | 4.6 out of 5 stars 287 Reviews | | Finish Type | Matte | | Input Voltage | 240 Volts | | Item Dimensions | 45 x 35 x 21 Millimeters | | Item Package Quantity | 1 | | Item Weight | 1 Ounces | | Item Weight Unit of Measure | 1 Ounces | | Item dimensions L x W x H | 45 x 35 x 21 Millimeters | | Manufacturer Part Number | DB9-TERS | | Model Number | DB9-TERS | | Number of Ports | 1 | | Power Plug Type | No Plug | | Product Finish Type | Matte | | UPC | 729440626303 | | Unit Count | 1.0 Count | ## Product Details - **Compatible Devices:** Charging Adapter - **Connector Type:** USB Type C - **Item dimensions L x W x H:** 45 x 35 x 21 Millimeters - **Brand:** CABLEMAX - **Finish Type:** Matte ## Images ![CableMax? RS-232 LED link Tester DB-9 Male to DB-9 Female - Image 1](https://m.media-amazon.com/images/I/61FCttfCyxL.jpg) ## Questions & Answers **Q: How the indicator led tell you is ok or not** A: Please use the following link, it has all the information on the operation, single page easy reference and description of the lamps and how the display of lit, not lit, and color of the LED is interpreted.http://serialstuff.amazonwebstore.com/CableMax-RS232-LED-link-Tester-DB9/M/B004OT995U.htm **Q: Are there simply LEDs connected to the lines, or does it have one shot circuitry to make the LEDs stay on for a bit even with a short pulse?** A: There is no one-shot dwell circuit, but the LEDs are two-color so you can see signal levels even when they're asserted false/space. **Q: Will this device show if the PC serial port is working properly, or does it have to be plugged in between the pc and a device, such as a printer?** A: it needs to be plugged in between the pc and a device. it will indicate comunication between the two on each of the pins of the rs-232. **Q: Is it possible to test db25 connections with this device? Maybe with an adapter,?** A: Yes, you will need a DB25 Male to DB9 female adapter. If you want to test online then you would also need a DB9 Male to a DB25 female adapter. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 通信されているかどうかの確認のために購入しました。 *by よ***ぎ on 9 June 2022* シリアルのポートから先で通信できているかを確認するために購入したのですが、問題なく機能し、重宝しています。 ### ⭐⭐⭐⭐⭐ Absolute must have for communication debugging. *by P***L on 24 February 2026* Works great for debugging PLC communication issues. I was chasing a ghost issue on an integrated PLC for a stationary battery backup system and this device showed exactly why the issue was happening. My com link cable had a broken wire at one end and this device instantly showed the result of it and finally put the ghost to rest after a quick cable swap. ### ⭐⭐⭐⭐⭐ . *by C***E on 11 February 2025* Mto bom ## Frequently Bought Together - CABLEMAX RS-232 LED Link Tester DB-9 Male to DB-9 Female - RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module - DB9 null modem male to female slimline data transfer serial port adapter 2 Pack --- ## 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.pe/products/111083923-cablemax-rs-232-led-link-tester-db-9-male-to](https://www.desertcart.pe/products/111083923-cablemax-rs-232-led-link-tester-db-9-male-to) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-09-09*