Cheap And Discounts USB Test Board Kit CC2530 27dBm 2.4GHz ZigBee Module E18-TBH-27 CH340G USB Interface UART Serial Port Test Board Wholesale. Buy Directly From Merchant CDEBYTE Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.