Sentinel detects TETRA/Airwave signals from marked and unmarked police cars, ambulances, and fire engines at distances of up to 1,000 metres.
It identifies the presence of a TETRA signal without decoding or storing messages. That signal-only approach makes Sentinel fully legal for use in the UK.
Receive clear visual and audio warnings that become more relevant as an emergency signal gets closer. Adjustable sensitivity helps reduce unwanted alerts during urban driving.
Fast, accurate detection for the road ahead.
Built for drivers who value precision.
The Accessible Alternative for TETRA Detection
Professional-grade TETRA detection for private motorists. No subscription. No data connection.
Passive Detection Only
No transmission, no interception. Receive-only technology that simply listens.
Quality first
We obsess over the details and strive to deliver the best products at the best prices, every time.
Customer care
We're always on your side: keeping our loyal customers happy is our top priority and number one goal.
Purposeful design. Clear awareness.