| Model TT-A, Model TT-C, Model TT-R has almost the same design, they use metal box. They all have functions of (1)Transmit the alarm signal to your telephone; (2) Remote monitoring the voice around the car, and speak to the person around the car by telephone; (3) Stop the car from running in case of hijack; (4) Support to remote start the engine by transmitters or by telephone (optional funcitn) ; (5) Central lock automation.
Model TT-A is the basical model. it doesn't has car phone funciton & wireless immobiliser.
Model TT-C has all the functions of Model TT-A, it also has an additional function: Handsfree Car Phone
Model TT-R has all the functions of Model TT-A, it alaso has 2 additional funcitons: (1) Code-protected remote controls. user could only disarm the system by inputting the correct password. No password, no operation. User need not worry about the loss of it. (2) wireless relay. this relay has no connection with the main gsm unit. Even the total GSM car alarm is completely destroyed by car thief, they could not drive away the car too because the wireless relay is cutting off the power supply, which is installed in a very secret place of the car.
Model TT-B & Model TT-D has almost the same design, they are design with wireless technology. they are using the plastic box. They all have functions of: (1) Transmit the alarm signal to your telephone (2) Remote monitoring the voice around the car, and speak to the person around the car by telephone; (3) Stop the car from running in case of hijack; (4) Wireless sensor & wireless immobiliser.
Model TT-B is the upgrade unit, it can only work along with the existing normal car alarm, it can upgrade the normal car alarm to GSM remote alarm, but some features could not be realized even it works together with those normal car alarm. Such as: "open the car door by telephone".
Model TT-D is a complete kit. it could work alone. but since Model TT-B & Model TT-D are all wireless design, there is no connection with the central lock system. so user could not use the transmitter or telephone to lock/unlock the car door. |