×

Registration

Profile Informations

Login Datas

or login

First name is required!
Last name is required!
First name is not valid!
Last name is not valid!
This is not an email address!
Email address is required!
This email is already registered!
Password is required!
Enter a valid password!
Please enter 6 or more characters!
Please enter 16 or less characters!
Passwords are not same!
Terms and Conditions are required!
Email or Password is wrong!

RS-232 LED link Tester DB-9 Male to DB-9 Female

RS-232 LED link Tester DB-9 Male to DB-9 Female
$19.98
Model Number DB9-TERS
RS-232 LED link Tester DB-9 Male to DB-9 Female

OR

Description

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.

Features

  • RS-232 DB-9 / DB25 Pin assignment No Power required
  • Standard RS-232 DTE & DCE Interface with DB-9 / F & DB-9 / M Connectors
  • Easy to install , Plug & Play
  • Standard RS-232 Port
  • Fully compliant with RS-232 Spec.
  • Double colors LED for easy cheeking of data transfer & receive
  • Compact size
  • Fit display of RS-232 working
  • Works with Windows 7, 8, 10, Linux, Mac OS X

Specifications

  • RS-232 DTE connector : DB9 - M
  • RS-232 DCE connector : 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

Pin Out

  • DB - 9 / DB25 Pin assignment Pin1 / Pin8 : DCD <== IN
  • Pin2 / Pin3 : RXD <== IN
  • Pin3 / Pin2 : TXD ==> OUT
  • Pin4 / Pin20 : DTR ==> OUT
  • Pin5 / Pin7 : GND
  • Pin6 / Pin6 : DSR <== IN
  • Pin7 / Pin4 : RTS ==> OUT
  • Pin8 / Pin5 : CTS <== IN
  • Pin9 / Pin22 : RI <== IN

Specification

Model Number DB9-TERS
UPC DB9-TERS
Color Black
Cable Length No
Connector N/A
Tech Specs RS-232 Tester DB-9 Male to DB-9 Female

Customer Reviews 33 item(s)

Great RS232 diagnosis tool
This is a great little device! As per the retention hex nut issue, this not a deal breaker. There are some excellent mods listed in the previous reviews. Or you can get a short serial cable on eBay for less than $2. Look for: RS232 DB9 9 Pin Male to Female Serial Port Cable Industrial Adapter 1.3M. Since this cable has thumb screws on both ends, it will act as an adapter.
Price
Value
Quality
Review by Ron / (Posted on 10/24/2016)
It works well - with a simple catch.
It does what it says it does and does it well. The LEDs give you a very clear indication of what's going on inside your serial cable.

Only caveat is that this is designed to be a pass-through device (one side is male, one female) but both sides have the "female" retention screw holes. This means you can't plug it directly into pretty much anything, because pretty much all computer and even device serial ports also have the female screw holes. If you take the screw holes off with a hex driver, the metal shielding comes with them, so you end up with an unshielded connection. Your choice is either deal with that or get two M->F cables where both ends have the screw threads and put this in the middle. I ended up using a little Krazy Glue to glue the metal shield to the plastic casing, but without the screw holes it's probably not even doing anything anyway. Just a heads up - you may have to do a little hacking, or get extra cables with the correct ends, to get this to attach to anything.
Quality
Value
Price
Review by Flint Million / (Posted on 4/28/2016)
Five Stars
excellent
Quality
Value
Price
Review by jose luis ayala / (Posted on 3/20/2016)
Four Stars
just using it for GPS signal but works great for that.
Quality
Value
Price
Review by Stacy Unruh / (Posted on 2/17/2016)
Five Stars
Does exactly what I needed it to do.
Quality
Value
Price
Review by Mark Bitterlich / (Posted on 2/5/2016)
Five Stars
This small gadget saves a lot of time during installation or troubleshooting. I use it to test RS232 signal.
Quality
Value
Price
Review by Alexandr Kazbanov / (Posted on 1/6/2016)
Five Stars
It works great! Got it fast! All is GOOD!
Quality
Value
Price
Review by Mike Cline / (Posted on 10/2/2015)
Five Stars
perfect for what i needed, good quality,
Quality
Value
Price
Review by Christopher Ryan / (Posted on 8/26/2015)
Works perfectly. Just what I needed to diagnose RS-232 ...
Works perfectly. Just what I needed to diagnose RS-232 issues.
Quality
Value
Price
Review by Steve Rohrer / (Posted on 6/22/2015)
Product arrived on time, as described, no complaints.
Product arrived on time, as described, no complaints.
Quality
Value
Price
Review by DJR Computing Services / (Posted on 6/16/2015)
Incredibly useful.
It's not perfect. As others have mentioned, if you remove the screw captures to use it (which is necessary for most applications), the ends fall off. However, I used small counter-sunk screws (the kind you get in little baggies with every piece of Extron gear ever) to keep it together, which does the trick.

The device itself works well and is worth its weight in gold for anyone who installs a variety of rs232 controlled gear. If it were up to me, every technician I work with would carry one.
Quality
Value
Price
Review by Jonathan / (Posted on 6/10/2015)
Five Stars
Awesome! Worth every penny.
Quality
Value
Price
Review by Michael Sablatura / (Posted on 3/17/2015)
Neat device.
Works great - Very small. Neat tool for solving serial problems.
Quality
Value
Price
Review by Amanda Melbourne / (Posted on 3/6/2015)
Four Stars
nice
Quality
Value
Price
Review by duane d ellis / (Posted on 2/23/2015)
works as expected.
works as expected. one star off ... had to replace stems with 4-40s screws .. very short ... see pictures
Quality
Value
Price
Review by R Saulnier / (Posted on 1/5/2015)
Five Stars
Great deal and exactly what I needed. Very satisfied.
Quality
Value
Price
Review by Ken Andrews / (Posted on 11/4/2014)
Excellent diagnostics tool
Excellent diagnostics tool, expedites troubleshooting and repair of digital circuits. Will order additional, saved hundreds of dollars in lost time.
Quality
Value
Price
Review by RADAR / (Posted on 9/6/2014)
Reliable
Not much to say about this little guy other then it works. I use it to test signal between control systems (AMX, Crestron) and the devices they control. One thing I would change is to make the pegs removable. Currently if you remove them then the metal around the input and output comes off. My workaround for this is to use gender changers on both end without the pegs.
Quality
Value
Price
Review by Amazon Customer / (Posted on 9/2/2014)
Five Stars
Great
Quality
Value
Price
Review by Stuart Bercun / (Posted on 6/27/2014)
Excellent product, huge AV RS232 control troubleshooting timesaver.
As an AV professional this is an extreme time-saver for RS232/Serial control trouble shooting. It eliminates the guess work of whether TX & RX are swapped and saves you from pulling out your multi-meter and trying to juggle test leads and DB9 cables in your hands with a flashlight. My only problem that myself and others who have reviewed this product have seen is the lug screw issue preventing you from plugging it into a piece of gear such as a TV RS232 port to determine serial TX pinout. This is easily resolved by swapping them with screws. Excellent product, will buy again!!
Quality
Value
Price
Review by AV Pro 77 / (Posted on 5/16/2014)
serves its purpose
no information to tell you what light status or color indicates, lights poorly mounted, tilt in multiple directions
was able to use it for my needs
Quality
Value
Price
Review by Gary Beckel / (Posted on 5/8/2014)
Should be used by anyone making first time connections to a serial device
Works very well and can save you lots of time connecting to serial devices for the first time. Lets you know if you need a null converter quickly
Quality
Value
Price
Review by Emil Marone / (Posted on 1/11/2014)
Works fine.
Small and rugged. Shows line activity for trouble shooting RS-232 data lines in the field. Met my needs for testing.
Quality
Value
Price
Review by A D Haworth / (Posted on 12/25/2013)
Perfect for current nine pin RS-232 testing
These were once hard to find - glad to have them here at Amazon. There are far too many 25 pin RS-232 testers on the market for a connector that's nearly disappeared. I have one of these in every tool kit and at every desk because they are indispensable for figuring out what's going on when a new piece of equipment wanders into the shop.

[Update December 2013]
One of the low-star reviews mentioned that these won't connect to chassis mount connectors that have jack sockets. I commented "Easy, unscrew the jack sockets on the tester". I got three new testers today and did that and the metal shells fell off. Older testers had captive metal shells so you could just unscrew the jack sockets if they get in the way. Today's don't. Four 4-40 screws will take care of it holding the shells on, but the product has changed in an unfortunate way.
Quality
Value
Price
Review by Bonkers Bill / (Posted on 10/12/2013)
RS232 is still alive
People don't realize that many sensors and I/O devices still use serial connections.

These are great for testing a connection and data flow.
Quality
Value
Price
Review by John Berry / (Posted on 10/2/2013)
Excellent - It does what it says it will do
I like some other reviewers know for a fact that serial connectivity is not dead, finding a tester for DB-9 is not off-the shelf available for sure and finding this on Amazon was a blessing. I was in need of a test unit that was inline and simple to use and understand for checking signals from a control panel to an RS-232 external control port to mounted video projectors. I have to ascertain when a projector does not turn on or off from the wall controller if it is the wall controller / wiring, or the projector - if I call the wrong vendor responsible for warranty / repair I have to eat the service call cost. Having a small test unit with a visual indicator makes the diagnosis very simple. I did not find the LED indictors "dim" as some others have mentioned, mine were nice and bright, and exhibited no "bleed over" to the LED next to it. This unit is rugged and does what it says it will do, I did find like some other reviewers that the nuts next to one side of the connector get in the way when not mating to a cable but directly a device, simple to remove however and not a problem at all. I would recommend this to others.
Quality
Value
Price
Review by BigdoginTexas / (Posted on 5/3/2013)
want a way to ensure your (CONNECTED) this is it
does the deed keeps me honest in the field when setting up gear and using *customers* wires on site. (S)
Quality
Value
Price
Review by kl / (Posted on 4/12/2013)
Awesome!!!!!!!!!!!
I use this on Arduino projects to detect which lines have the data on them. I wish I had bought one of these years ago.
Quality
Value
Price
Review by goWolfpack / (Posted on 2/17/2013)
9 Pin Serial "Tester" - RS-232 LED link Tester DB-9 Male to DB-9 Female
Good for "seeing" your serial traffic and connectivity. Small and compact. Well built. LEDs light up when the pins are active and flash when traffic is passing.
Quality
Value
Price
Review by z33k / (Posted on 2/7/2013)
DB-9 Tester
Works very well, glad to have it. The female-thread retainers were cumbersome and interfered with some cables; I had to remove them with pliers. Also would have preferred lights to shine red for positive, green for negative, but it's ok this way too. Very handy item.
Quality
Value
Price
Review by NickyB / (Posted on 9/25/2012)
RS-232 DB-9 LED link tester
The light for each line shows either none (dim), green, or red. I am not sure whether green means high, and red low, or something else. It works very well for loopback tests (TX connected to RX). It can only be inserted between two cables, not between a cable and a chassis.
Quality
Value
Price
Review by Bob S / (Posted on 7/25/2012)
Great little lamp box.
I first used this device when I was commissioning data centers for Clearwire. Our job was to start up a newly built data center. Most network equipment is initially configured via a serial connection. Most adhere to the "Cisco standard" but some are just down right odd. One of our tasks was to connect each device to a terminal server. That meant that we had to figure out each pin-out. This little matchbox sized lamp box saved our arses. If your life involves connecting to various odd serial ports, you want this. If you have a serial cable in your kit, you want this in there with it.
Quality
Value
Price
Review by nethead / (Posted on 4/13/2012)
Excellent tester.
Though devices using serial connectivity are becoming a thing of the past, there are still a good number of devices that are not available with native USB connectivity and require serial port connectivity. Unfortunately, serial devices are not as plug-and-play as USB devices and thus often require some level of troubleshooting to get them up and working. This handy little link tester can be invaluable in determining if the serial connection is mated properly and if communications is occurring. I have used a number of these types of devices over the years and this particular 9-pin device is very convenient. The only drawback is the LEDs are not as bright as I would like to see. If you are in a brightly lit room or out of doors, it may be difficult to see the indication. Overall, I give this tester a thumbs-up.
Quality
Value
Price
Review by ErnieG / (Posted on 4/27/2011)
Add Your Review

Add A Review

How do you rate this product? *
 
1
2
3
4
5
Quality
Price
Value