This is the Compustar FT-DAS-II 4-in-1 security sensor.

Four sensors in one small module, which saves mounting and wiring four separate parts under the dash.

What it detects

• Shock — impacts to the vehicle, with a warning level and a full trigger level
• Tilt — the vehicle being jacked up or lifted onto a tow truck
• Glass break — the specific frequency of breaking glass
• Movement — the vehicle being moved

Sensitivity is adjustable, which matters. A sensor set too high is one your neighbours learn to ignore, and one set too low never fires when it should.

Paired with DRONE Mobile, it gives two-way alerts, so a trigger reaches your phone rather than just sounding in an empty parking lot.

Requires a compatible Compustar system, sold separately.