The Best rs232 break out box of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best rs232 break out box of 2022. Check our ranking below.

2,149 Reviews Scanned

Rank No. #1

PIMFG RS-232 DB25 BREAK-OUT BOX TESTER

RS-232 Break-Out-Box offers a complete control of RS-232 interface, test, re-wire and open signal lines.
Batteryless, Pocket-sized for circuit testing, monitoring and patching.
There are 10 interface signal powered LEDs to permanently monitor TD, RD, RTS, CTS, DSR, CD, TC, RC, DTR (E) TC and two LEDs for spare.
24 switches enable to break out circuit or reconfigure and patch any or all of 24 active positions.
This unit has one DB25 male and one DB25 female RS-232 connectors.

Rank No. #2

OBD2 Breakout Box with LED Light Indicator, Professional 16-Pin OBD Breakout Box Automotive Electrical Diagnostic Test Tool, Portable Auto OBD2 Protocol Detector Car Testing Tool

1.【Detect Communication Protocol, Power Supply and Grounding Circuit】This is a professional automotive tool for the OBDII diagnostic link connector which offers easy access to the OBDIl connector for monitoring signals of protocol, power and grounds conveniently and safely. When unconfirmed signals are detected, the breakout box can also be connected to a multimeter or oscilloscope for further testing.
2.【LED Indicators】The LED lights on the OBD2 breakout box can quickly indicate whether the power and grounding of the OBDII interface on the car are normal. Yellow LED (Pin 2/6/7/10/14/15) lights up to show communication with a scan tool and protocol identification; Green LED (Pin 4/5) lights up to indicate good ground. The Red LED (Pin 16) lights up to show there is power.
3.【16 Pin OBD Interface】The input jack layout simulates the 16-pin layout of the OBDII interface, making more tests quick and intuitive. All 16 pins of OBDII can be easily connected when the decoder communicates with the vehicle. This OBD2 breakout box provides easy access to the vehicle data bus lines.
4.【90CM Extension Cord】The OBDII connector extension cable adopts multithreading data connection technology, which makes the connection faster and smoother. The cable body is made of elastic thermoplastic TPU material, which has the characteristics of the high elasticity, high strength and high resilience.
5.【Standard 4MM Rubber Socket】The OBD2 breakout box uses safe banana sockets, and the built-in input jack can be connected to any type of 4mm banana plug, including those with safety sheaths, making it easier to connect the breakout box to a multimeter or oscilloscope.

Rank No. #3

202537, Line Monitor, Network Cable Tester Breakout Box Mini RS-232 DB25-pin in-Line Power

Rank No. #4

OBD2 Breakout Box Diagnosis Scan Tool for Monitoring Signals of Protocol/Power/Grounds,Automotive OBDII Protocol Monitor. Breakout Box for OBDII Diagnostic Link Connector

【Major Function】VKALTUL automotive OBDII protocol monitor is an automotive tool for the OBDII diagnostic link connector which offers easy access to the OBDII connector for monitoring signals of protocol , power and grounds conveniently and safely . It can be also connected to multi-meter or oscilloscope for further testing once unconfirmed signals detected.
【LED Indications of OBD2 Breakout Box】LEDS to quickly indicate power or ground problems of OBDII connector. When the code reader communicates with the vehicle, the yellow LED (pin 2/6/7/10/14/15) lights up and occur a waveform signal. If the car is detected grounded normally, the green LED (pin 4/5) will always be on. If the car power supply is detected as normal, the red LED ( Pin16） will always be on.
【16 pins OBDII Interface】OBD interface of the breakout box adopts a 16 pins design, which completely simulates the 16 pin layout of the OBD II interface, so that more tests can be performed quickly and intuitively. Easily access each of the 16 pins while scan tool communicating with vehicle.
【4MM Banana Sockets】The OBD2 breakout box set uses safety banana sockets that accept all types of 4mm banana plugs including those with safety sheaths，so as to connect to a multimeter or oscilloscope for further measurement of uncertain monitoring signals.
【35.43-inch Extension Cable】The OBD2 protocol detector has male and female connectors. You can place the breakout box between the diagnostic tool and the vehicle, which makes it easier to measure the can bus signal. The cable length of OBDII diagnostic link connector is 35.43-inch, which makes equipment connection more convenient.

SaleRank No. #5

OBD2 Breakout Box, Automotive OBDII Protocol Detector Communication/Power/Ground Detection Breakout Box 16-Pin CAN 17.7 inches Cable Fault Diagnosis Scan Tool with Universal Wire Jumper and Clips

【Basic Introduction】The upgraded OBD2 Breakout Box is a specialized automotive tool designed for OBD diagnostic link connectors. It enables simultaneous connection to multiple diagnostic devices for testing purposes. This tool offers convenient and secure access to the OBDII connector, allowing for the monitoring of protocol signals, power, and grounds.
【Powerful Features】This breakout box kit can also power the on-board computer, test OBD voltages, and perform other functions. The OBDII Breakout Box can be easily connected directly to the vehicle's on-board data link, providing straightforward access to the vehicle's data bus line.
【16 Pins OBDII Interface】The input jack arrangement of the OBDII diagnostic link connector faithfully replicates the 16-pin configuration of the OBDII interface. This design facilitates rapid and straightforward testing of a wider range of connections, granting you swift access to all 16 pins for efficient vehicle servicing and diagnostics.
【Built-In 4mm Input Jacks】The Automotive OBDII Protocol Monitor features built-in input jacks compatible with 4mm banana plugs, facilitating easy connections to multimeters or oscilloscopes for more in-depth measurements. By linking to a DC 8V-30V power source, it can supply power to the vehicle's ECU, making it useful for battery replacements and related tasks.
【Flexible Cable & 5ft Battery Alligator Clip】 The OBD II extension cable spans 17.7 inches, Crafted from supple thermoplastic TPU material, which is durable.The 5-foot battery alligator clip cable is tailored for DC2.1*5.5mm connections, perfectly suited for DC12V at 2A power supply.

Rank No. #6

KAWISH OBD2 Breakout Box Auto OBDII Protocol Detector 16-Pin CAN Bus Test Breakout Box with LCD Display for OBDII Protocol Communication Detection/ECU Tool

【Auto OBD2 Breakout Box】 This is an Breakout Box OBDII Protocol Detector for the car OBDII diagnostic link connector, which provides easy access to the OBDII connector so that after connecting the automotive OBDII system, the different color LEDs on the OBD2 junction box can monitor the protocol, power and ground signals conveniently and safely, good helps detect if the problem is with the vehicle's ECU or decoder.
【LED flashing of OBDII Breakout Box】 LEDs provide a quick indication of OBDII Protocol Detect power or ground issues. When the code reader is communicating with the vehicle, the yellow LED (pin 2/6/7/10/14/15) lights up with a signal waveform. If a normal car ground is detected, the green LED (pin 4/5) will be on solid. If it is detected that the car power supply is normal, the red LED (Pin16) will be always on.
【Digital display and 16-pin interface design】 Auto 16 pin dlc breakout box an LED display design is added to first eliminate the voltage problem of the OBD port and easily determine whether the cable and the car OBD port are connected correctly. The port is designed with a 16-pin interface, when the OBD2 scanner communicates with the vehicle, it can easily connect all 16 pins of the OBDII junction box for more tests quickly and intuitively.
【4mm banana plug & 128cm extension cord】 The OTC Can test box has a safety banana socket that accepts all types of 4mm banana plugs. You can connect a multimeter or oscilloscope to the banana socket to detect the detailed signal information of the corresponding lit port. The cable length of the obd ii breakout testing box is 128cm, which makes device connection more convenient and you don't have to operate in a narrow space in the car.
【Strong safety performance】 This Auto ECU Breakout Box can prevent the power supply from being reversed, and the KW308 will sound an alarm when reversed connection occurs. It can protect the diagnostic tool from damage such as power short circuit. The product comes with a small flashlight to help plug the OBD port into the car when the light is low. (Do not jumper pins together without understanding the circuits. )

Rank No. #7

OBD2 Breakout Box Powerful OBDII Protocol Detector Communication/Power/Ground Detection Breakout Box 16-Pin CAN Breakout Box Automotive with OBD2 Scanner Connector, 4mm Banana Jack, 35-inch Cable

【Powerful OBD2 Breakout Box】This is an automotive diagnostic tool for the OBDII diagnostic link connector which offers easy access to the OBDII connector for monitoring signals of protocol, power, and grounds conveniently and safely after connecting the car OBDII system. OBDII protocol detector can be also connected to multi-meter or oscilloscope for further testing once unconfirmed signals detected. OBDII breakout box is perfect for diagnosing and modifying your cars or trucks.
【OBD2 Communication/Signal&Power Supply & Grounding Detection】Through different color LED lights on breakout box, you can quickly judge whether communication, power supply and grounding of OBDII interface on vehicle are normal. Yellow LED lights on indicate that OBD2 scanner is communicating with vehicle and the corresponding 2/6/7/10/14/15 pins have signal waveforms. When vehicle body is properly grounded, Green LED of pin 4 and 5 are on. When power supply is normal, Red LED of pin 16 is on.
【CAN Bus/K-line/L-line/PWM Protocol Line Detection OBD2 Protocol Detector】OBD2 breakout box not only can detect car signal but also can detect some of diesel signal such as K-line, L-line, CAN bus and PWM protocol line. It is easier to measure CAN bus signals by placing a junction box between the breakout box and the vehicle.
【OBD2 Scanner Detection & 4mm Banana Jack OBD2 Breakout Box】When you connect the OBD2 scanner, if the information on the OBD2 scanner screen is consistent with the light on the breakout box, it means that the OBD2 scanner is not faulty. The built-in input jack of the OBDII protocol detector can be connected to any type of 4mm banana plug. You can connect a multimeter or an oscilloscope to the banana jack to detect the detailed signal information of the corresponding lighted port.
【OBDII 16 Pins Design & 35-inch Extension Cable of Breakout Box Automotive】The input jack layout of OBD2 protocol detector fully simulates the 16-pin layout of the OBDII interface,allowing more tests to be performed quickly and intuitively. When the OBD2 scanner communicates with vehicles, all 16 pins of OBDII breakout box can be easily connected. No need to directly operate the pins of the OBDII interface. OBD2 breakout box has female connector and male connector with a 35-inch extension cable.

Rank No. #8

RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module

Connect in series with any RS-232 interface for testing a serial RS-232 data link. Simple and easy, no oscilloscope is needed. DIP switch can setting disconnect or reconnect any signal, and support external probe test signal from male or female position.
8 double-color (red and green) LEDs indicate the logic states for respective data lines. Green for logic HIGH and red for logic LOW. Full RS232 spec compliant with LEDs for all 8 signals: DCD, RXD, TXD, DTR, DSR, RTS, CTS, RI.
No external power required. No driver required. Plug and play. Jack sockets(nuts) on the tester can be unscrewed easily(with metal shell held in place) if needed to mate with another connector that has jack sockets.
OS Compatibility: Windows 98, Me, XP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac OS 10.X, ect.

Rank No. #9

DUOYI OBD2 Breakout Box Can Bus Breakout Box with LED Light Auto OBDII Protocol Detector 16-Pin OBD2 Breaker Box Automotive Electrical Diagnostic Tools Can Bus Analyzer with 35inch Cable

【OBD2 breakout box With Pass-Through Feature】OBD2 breakout box is a car diagnostic tool with pass-through function, which can connects inline between your OBDII diagnostic port and your ODB 2 reader or other ODB 2 device for effective and safe monitoring signals of protocol, power and grounds, and you can also use it to charge scanning tools via the ODB II port. Additionally, the breakout box can also be connected to a multimeter or oscilloscope for further detection of unconfirmed signals.
【Detect CAN bus/K-line/L-line/PWM Protocol Line】OBD2 breakout box works great for communication line diagnoses, which not only helps you see the OBD signals as they are operational, but also detect some diesel signals, such as CAN bus, K-line, L-line and PWM protocol line. You can place this OBD2 breakout box between your diagnostic tool and your vehicle, which makes bus can and K-line diagnostics easier.
【LED Indicator】Breakout box is designed with LED indicators that you quick visual indicators of the state of each data line plus power and ground via led lights.When vehicle body is properly grounded,Green LED of pins 4 and 5 will be on;when the power supply is normal,Red LED of pin 16 will be on;when the decoder communicates with the vehicle,pin 2 or 6/7/10/14/ 15 has signal waveform.Breakout box makes it super easy to test for good connections at the pins without dealing with finicky probes.
【16 pins OBDII Interface & 90cm Cable】OBD interface of the detector adopts a 16 pins design,the input jack layout fully emulates the 16-pin layout of the OBDⅡ interface,allowing more tests to be performed quickly and intuitively,you can have quick access to all 16 pin connections during vehicle service and diagnostics.You do not need to directly operate the pins of the OBDII interface.The cable length of the OBDII data line detector is 90 cm,which makes the device connection more convenient.
【16 Standard 4mm Banana Sockets & Male and Female Connectors】The built-in input jack of the OBD2 breakout box can connect any type of 4mm banana plug, you can connect a multimeter or oscilloscope to any jack to check voltages or signal levels. OBD2 breakout box has male and female connectors for connecting the car OBDII system and the scan tool, so that after you connect the scan tool, you can also detect each pin on the connector through the breakout box.

Rank No. #10

OBD2 Breakout Box Automotive Advanced OBDII Protocol Detector with LCD Display & LED Indicator, 16-Pin CAN Breakout Box Diagnostic Tool for Power Car E.CU, Use with Scanner/Multimeter/Oscilloscope

【Upgraded OBD2 Breakout Box】This is an OBDII protocol detector designed for diagnosing the 12V car OBDII data line. It provides easy access to the vehicle's OBDII system. The LED lights of different colors and voltage display on the OBD2 breakout box allow convenient and safe monitoring of the protocol, power, and ground signals. This breakout box automotive can be connected to an OBDII code reader, multimeter, or oscilloscope for further testing when unconfirmed signals are detected.
【OBD2 Communication/Signal & Power Supply & Grounding Detection】Breakout box automotive can help you measure whether the communication signal (such as K-line, L-line, CAN bus and PWM protocol line), power supply, and grounding of the vehicle OBDII interface are normal. CAN breakout box not only can detect 12V car signal but also can detect some of 12V diesel vehicle signal. It is perfect for people who likes diagnosing and modifying cars. Note: The breakout box is used on 8-16V vehicles.
【3-color LED Indicator of OBDII Breakout Box】The LED lights on the OBD2 breakout box can quickly indicate whether the communication, power and grounding of the car's OBDII interface are normal. Yellow LED (Pin 2/6/7/10/14/15) lights up to indicate that the OBD2 scanner is communicating with the vehicle and the pins have signal waveforms. Green LED (Pin 4/5) lights up to indicate that car body is properly grounded. Red LED (Pin 16) lights up to indicate that the power supply is normal.
【Voltage Display & Power E.CU when Replacing Battery】Our OBD2 breakout box is equipped with a voltage display to help you constantly monitor the battery voltage. Breakout box also comes with a DC power jack and a 12V battery alligator clip. Before replacing the battery, you can use the breakout box automotive to connect the DC 8V-16V auxiliary power supply to sustain the power supply to the vehicle to prevent data loss, audio lock-up or malfunctions of the E.CU control module due to power failure.
【16-Pin Jack Layout Design for All 4mm Banana Plug】The input jack layout of OBDII breakout box fully simulates the 16-pin layout of the OBDII interface, allowing more tests to be performed quickly and intuitively. You can easily access each of the 16 pins while OBD2 scanner communicating with vehicles.The built-in input jack can be connected to all types of 4mm banana plug. You can connect a multimeter or an oscilloscope to the banana jack to further detect the detailed signal information.

Last update on 2025-03-19 / Affiliate links / Images from Amazon Product Advertising API

How Do You Buy The Best rs232 break out box?

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The Best rs232 break out box of 2022 – Reviewed and Top Rated

How Do You Buy The Best rs232 break out box?

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