---
product_id: 346887762
title: "CABLEMAX CableMax RS-232 LED link Tester DB-9 Male to DB-9 Female"
brand: "cablemax"
price: "Rp1396293"
currency: IDR
in_stock: true
reviews_count: 5
category: "Cablemax"
url: https://www.desertcart.id/products/346887762-cablemax-cablemax-rs-232-led-link-tester-db-9-male
store_origin: ID
region: Indonesia
---

# Instant diagnostics with dual-color LEDs No external power needed Universal DB-9 & DB-25 compatibility CABLEMAX CableMax RS-232 LED link Tester DB-9 Male to DB-9 Female

**Brand:** cablemax
**Price:** Rp1396293
**Availability:** ✅ In Stock

## Summary

> 🔍 Debug like a pro—never miss a signal with CableMax RS-232 Tester!

## Quick Answers

- **What is this?** CABLEMAX CableMax RS-232 LED link Tester DB-9 Male to DB-9 Female by cablemax
- **How much does it cost?** Rp1396293 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/346887762-cablemax-cablemax-rs-232-led-link-tester-db-9-male)

## Best For

- cablemax enthusiasts

## Why This Product

- Trusted cablemax brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play simplicity:** No drivers or external power required—just connect and start troubleshooting immediately.
- • **Cross-platform flexibility:** Compatible with Windows, Linux, and macOS, empowering your workflow regardless of OS.
- • **Lightning-fast diagnostics:** Instantly verify RS-232 signal activity with intuitive dual-color LED indicators for each pin.
- • **Real-time data flow monitoring:** LEDs flash to show transmit and receive signals, giving you live status updates at a glance.
- • **Universal serial compatibility:** Seamlessly works with any male or female 9-pin RS-232 serial connections, including DB-9 and DB-25.

## Overview

The CableMax RS-232 LED Link Tester is a compact, plug-and-play diagnostic tool designed for instant verification of serial COM port connections. Featuring dual-color LEDs for each pin, it supports both DB-9 and DB-25 connectors without needing external power or drivers. Compatible across major operating systems, it’s the essential gadget for professionals seeking quick, reliable serial communication troubleshooting on the go.

## 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

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.

## Features

- [ Instant Diagnostics ] : Test COM ports are working properly & quickly verify RS-232 signal activity with dual-color LED indicators on each pin for easy troubleshooting.
- [ Universal Compatibility ] : Works with any male or female 9-pin RS-232 serial connection, supporting both DB-9 and DB-25 configurations.
- [ No External Power Required ] : Requires no external power to function, ideal for on-the-go or low-resource testing environments.
- [ Plug & Play Installation ] : Simple to install with no drivers needed - connect directly for immediate use.
- [ Quick Status Monitoring ] : LED lights flash to indicate transmit and receive data flow, allowing easy real-time monitoring.
- [ Broad OS Support ] : Compatible with Windows 11, 10, 8, 7, Linux, and macOS for flexible deployment across platforms.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004OT995U |
| Best Sellers Rank | #11,920 in Computers ( See Top 100 in Computers ) #20 in Serial Adapters |
| Brand | CABLEMAX |
| Color | Black |
| Colour | Black |
| Compatible Devices | Personal computer, laptop, desktop |
| Compatible devices | Personal computer, laptop, desktop |
| Connector Type | DB-9 |
| Connector type | DB-9 |
| Customer Reviews | 4.6 out of 5 stars 287 Reviews |
| Finish | Plastic |
| Item Dimensions | 45 x 35 x 21 millimeters |
| Item Weight | 1 Ounces |
| Item dimensions L x W x H | 45 x 35 x 21 millimeters |
| Manufacturer | CableMax |
| Mfr Part Number | DB9-TERS |
| Model Number | DB9-TERS |
| Number of Items | 1 |
| Number of Ports | 1 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Specific Uses For Product | Monitor |
| Specific uses for product | Monitor |
| UPC | 729440626303 |
| Unit Count | 1 Count |

## Product Details

- **Compatible devices:** Monitor
- **Specific uses for product:** Monitor
- **Connector type:** DB9
- **Colour:** Black
- **Item dimensions L x W x H:** 45 x 35 x 21 millimeters

## Images

![CABLEMAX CableMax RS-232 LED link Tester DB-9 Male to DB-9 Female - Image 1](https://m.media-amazon.com/images/I/61FCttfCyxL.jpg)
![CABLEMAX CableMax RS-232 LED link Tester DB-9 Male to DB-9 Female - Image 2](https://m.media-amazon.com/images/I/71qBl9BQr9L.jpg)
![CABLEMAX CableMax RS-232 LED link Tester DB-9 Male to DB-9 Female - Image 3](https://m.media-amazon.com/images/I/71kEwKLTADL.jpg)
![CABLEMAX CableMax RS-232 LED link Tester DB-9 Male to DB-9 Female - Image 4](https://m.media-amazon.com/images/I/81iatgVq5SL.jpg)
![CABLEMAX CableMax RS-232 LED link Tester DB-9 Male to DB-9 Female - Image 5](https://m.media-amazon.com/images/I/811Bye3Z+GL.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
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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-07-07*