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⚡ Instantly decode your RS-232 signals—no oscilloscope, no hassle!
The OONO RS232 Breakout Tester LED Monitor is a compact, plug-and-play DB9 male-to-female module designed for real-time testing of RS-232 serial data links. Featuring 8 dual-color LEDs that indicate logic states for all key signals, a DIP switch for customizable line control, and broad OS compatibility, it eliminates the need for complex equipment like oscilloscopes. Ideal for professionals seeking quick diagnostics and seamless integration with existing serial devices.








| ASIN | B08CDQ76Q8 |
| Best Sellers Rank | #30,798 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #55 in Network & Cable Testers |
| Brand | OONO |
| Brand Name | OONO |
| Color | Green,Red |
| Compatible Devices | Devices with RS-232 serial communication interface |
| Customer Reviews | 4.6 out of 5 stars 224 Reviews |
| Included Components | no |
| Item Weight | 0.27 g |
| Manufacturer | CZH-LABS |
| Model | OONO-F1023 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | OONO F-1023 |
| Power Source | Corded Electric |
| Specification Met | Rs232 |
| Style | DB9 MF |
| Style Name | DB9 MF |
| Unit Count | 1 Count |
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