uln2803 8 bit 4 Relay Board  for Raspberry Pi 



 1. J11   GND, D0, D1,D2,D3,D4,D5,D6,D7   OUTPUT

 with D0~ D7 LED

2. This board use GPIO 17,18,27,22,23,24,25,4 control D0 ~D7

    GPIO 17,18,27,22 control Relay 1 ~4

3.  J28 & J10 (2P Terminal Block) for 5V input for Relay & 2803

4. U5 ULN2803 8 darlington transistor array    

5.J15,J17,J25,J24 for disable Relay (remove disable)

6. Step motor connector J12 (5V,D0,D1,D2,D3)  J19(5V,D4,D5,D6,D7) 

      can use Step motor (28BYJ-48 5VDC)   



Use this board you can learn how to program use "C" or  "Python" , Will provide sample program for test can download from our web site.

Package Content

1x  Rs-Pi uln2803 8 bit  4 Relay Board 
1x  9pin female to female cable
1x  Manual 


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5. Usually Delivery Time approximately 1 - 2 business days, In rare cases,it may take longer due to delay in holidays.

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