Car alarm systems

Vendor	Frequency Used
Viper	434 MHz, 900 MHz
Python	434 MHz, 900 MHz
Clifford	434 MHz, 900 MHz
Avital	434 MHz, 900 MHz
Prestige	434 MHz, 900 MHz
Directed	434 MHz, 900 MHz
Compustar	433.92 MHz
ScyTek	433 MHz
Crimestopper	433 MHz