... distance 2.3 Control Modes 3.Easy use for Light,Motor,Fan,Gate,Door,Lock, Window, Blind, Banne, Winch, Bell ... through walls, floors and doors.With characteristics of reverse power protection and over current protectionAudible / visual indicationUse microcontroller model of EM78P156 ... 1 and Jumper-2.Control mode Latched: Press -> On, another relay Off; Press another button -> Off.Press button 1: Turn on ...