This model only work with sms,it is a best solution for individual user

Band: 900MHz/1800MHz and 850MHz/1900MHz(optional)
Remote locating and tracking by SMS
Monitor the sound in the car
Remote disable/enable engine
Overspeed alert
Three authorized phone number for SOS alert
Remote rea-time and set-time tracking
Emergency help
Power disconnected alarm
Two user defined function
No monthly service charges to be paid