3:Produce Features; 4:Port; 5:Product Parameters; 6:Typical Application - Raspberry Pi 52PI-RPI-UART User Manual

Raspberry Pi UART Expansion Module User Manual
The Serial Por module is specifically designed for Raspberry Pi. The module use
Maxim MAX232 chip and DB9 port. So the user don't need to connect Dupont Line
and that avoid wrong wiring. User can use this module to debug Raspberry Pi easily.
3:Produce Features：
 Maxim MAX232 on chip
 DB9 port
4:Port：
 Raspberry Pi connection port
 DB9 port
5:Product Parameters：
 Working voltage: 5V
 Two Drivers and Two Receivers
 Operates Up To 120 kbit/s
 Low Supply Current . . . 8 mA Typical
6:Typical Application：
 Interface Translation
 Multidrop RS-232 Networks
 Low-Power Modems
7:How to use：
Just insert the module to Raspberry Pi, like the below picture：
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