Folding design to protect pressing keyboard by mistake Carrier modulation: FM-FM Remote transmission distance to main unit around 1000m Remote feedback range to transmitter up to 1500m Diamond film glass lens for anti-scratch Extra high light emerald green LCD back light Two-way feedback confirmation, everything is under control Blue super bright LED indicator Trunk release (need add relay) Basic alarm function same as one way car alarm Can add stat module Accept Redesign by customer Double side PCB, full SMT technology One transmitter or two transmitter