2CH Remote Control Set (1+3) 
Details 详述 :
~ 2 Channels Wireless Receiving Panel
~ 2 Channels Wireless Transmitter

Special Features 特点:
~ Crystal controlled frequency
~ Tuning with dip switch
~ Learning up to 80 users with unique frequency
~ Build-in single zone alarm
~ Easy toggle between latching/momentory with dip switch
~ With on/off switch