ITEM NAME:5V 4-Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR A UQB Descriptio n 4 way 5V relay module Relay control panel USB interface Colour:blue size:11*3*1.5cm Material:metal Package Contents:1 x Relay module Note: 1.Please allow a little size error due to manual measurement.           2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different We offer you what you need! 5V 4 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR A2 D7I3.4 way 5V relay module. USB interface. size:11 3 1.5cm. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. We'd like to settle any problem in a friendly manner.
