The device emits an audible alarm and a colour-coded warning telling the driver how frequently the speed trap has been reported.

Standard features include a visual and audible alarm, a battery-powered backup alarm, and a remote alarm system, which contacts one user by e-mail, pager, or phone.

The device then sounds an audible alarm together with providing onward signalling in the presence of enough water to bridge the contacts.

Notification can be through a computer (email or text message), pager, cellular phone voice call, audible alarm, or all of these.

These features trigger an audible alarm.