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