ly-908 1.two-way modulation and code learning system 2.double-sided pcb and total smt production 3.remote control range up to 3000 feet 4.main unit feedback range up to 3500 feet 5.remote lock/unlock, remote arm/disarm 6.lcd el back light and instant car status checking 7.e-eprom code memory 8.intelligent-alarming delay for cars with dome light delay 9.visible and/or audible car locator 10.automatic arming reminder to further enhance security 11 car anti-hijack protection engine cut 12 remote panic with siren chirp and light flash 13 smart led indicator to show different status 14 environment-friendly mute mode 15 2-wire original central door lock interface 16 second and third channel output 17 valet mode and all zone protection 18 keyboard lock 19 remote engine/air conditioning starter (optional) technical data: frequency: 433.92mhz