Data Sheet
Ref. IS.MDUINO.XXX 
8.3  Relay Shield ..................................................................................................................... 31 
  M-Duino Arduino I/Os 5V pins ................................................................................. 32 
  A Zone Features: Communications & RTC & uSD .................................................. 32 
10.1  RS-232 ............................................................................................................................. 32 
10.2  RS-485 ............................................................................................................................. 33 
10.3  I2C .................................................................................................................................... 33 
10.4  SPI .................................................................................................................................... 34 
10.5  TTL ................................................................................................................................... 34 
10.6  Ethernet ........................................................................................................................... 34 
10.7  RTC................................................................................................................................... 35 
10.8  uSD .................................................................................................................................. 35 
  I/O technical details: ............................................................................................. 36 
  Typical Connections .............................................................................................. 39 
  Connector details: ................................................................................................. 43 
  Mechanical Characteristics ................................................................................... 44 










