Features of FDM3-100 series phonic car alarm systems:

Fashionable phonic indicating in following situation: Car alarm on/off, first collision, door not closed, backing the car without car alarm on

Bi-vibrate sensor is avalable (dealing with inconsistent vibrate sensibility between the car head and car back )

Remote on/off phonic indicating function

The same function as the car alarm without phonic indicator as this function off