Features: Two-stage anti-carjacking (engine immobilized remotely) Automatic central door locking / unlocking Two-way luminescence LED display monitors car status Fashionable, handy transmitter Hopping code transmitter, protection for lost transmitter Reminder of arming / closing door Shock / impact / warning sensor (plug-in shocking sensor) Alarm with sound and light Keyless entry Remote trunk release Silent arming / disarm / automatic rearming Low battery reminder Code learning Transmission distance 1000m, return distance 2000m Dome light delay Mainframe Technical Parameter : Remote Control Technical Parameter : Working voltage range: 9-15V Working voltage : 1.5V Static current:<10mA Static current: < 0.1mA Working frequency: 433.92MHz Working frequency: 433.92MHz Speaker voice range:110~125dB Transmitting frequency:10mW Working temperature: -20℃~+85℃ Working temperature: -20℃~+85℃