Lcd module FRM02 2 channel Multifunctional Relay Module / Loop Delay / timer switch / self-locking / 5V,12 V 24V FRM02 type 2 channel relay control module, designed for a variety of different needs of users, the micro controller as the main control unit, as many as 18 kinds of preset functions, and can according Read more about Lcd module FRM02 2 channel Multifunctional Relay Module / Loop Delay / timer switch / self-locking / 5V,12 V 24V[…]