Cheap And Discounts LCD GM328A GM328B Mega328 Transistor Tester LCR Diode Capacitance ESR Voltage Frequency Meter PWM Square Wave DIY Kit with Case Wholesale. Buy Directly From Merchant SeasBoat Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.