1. 500M of control distance 2. 4 Control Mode 3. Easy use for Light,Motor,Fan,Gate,Door,Lock, Window, Blind, Banne, Winch ... Supply: 1 x 23A -12V battery(included, can be used for 12 months Usage:Setting control mode Latched: Disconnect Jumper-1 ... Jumper-2.Control mode Latched (Channel 1~4): Press -> On, other relays Off; Press other button -> Off.Setting control mode Momentary: Only connect ...