Apex Alert Sentinel
Apex Alert Sentinel
Know what's coming before you see it.
The Apex Alert Sentinel is a passive TETRA signal detector designed for in-vehicle use. It monitors the 380–430 MHz frequency band used by UK and EU emergency services, alerting you to nearby police, ambulance, and fire service activity — including unmarked vehicles — even when no lights or sirens are in use.
This is a driver-awareness and road-safety tool. It does not decode message content, identify specific vehicles, or transmit any signal. It is a passive, receive-only device.
How It Works
- Detect — The Sentinel continuously and passively monitors the TETRA frequency band (380–430 MHz) used exclusively by UK and EU emergency services.
- Recognise — On detecting TETRA signal activity in your vicinity, the device identifies it as emergency service radio traffic.
- Alert — A clear, immediate alert notifies you of nearby emergency vehicle activity, giving you time to react safely and responsibly.
Technical Specifications
- Frequency Range: 380–430 MHz (TETRA band)
- Detection Mode: Passive receive-only — no transmission
- Alert Type: Visual and audible
- Power: 12V vehicle power (USB or hardwire)
- Mounting: Windscreen suction mount included
- Compatibility: All right- and left-hand drive vehicles
- Certifications: CE marked
What's in the Box
- Apex Alert Sentinel detector unit
- Windscreen suction mount
- Vehicle power cable
- Quick-start guide
Legal Position
The Apex Alert Sentinel is legal to use in the United Kingdom and the majority of EU countries. It is a passive, receive-only device — it does not decode, record, or transmit any communications. It is not a radar detector, laser detector, or speed camera detector, and is not designed or intended as an enforcement-evasion tool. It is a driver-awareness and road-safety aid.
It is your responsibility to verify the legal position in your country of use before purchase. Laws vary by jurisdiction.
Pre-Order Information
The Apex Alert Sentinel is currently available for pre-order. Estimated delivery is approximately 3 months from your order date.
You have the right to cancel your pre-order and receive a full refund of your payment at any time before order fulfilment, in accordance with the UK Consumer Contracts Regulations 2013.
Frequently Asked Questions
Is this legal in the UK?
Yes. The Apex Alert Sentinel is a passive receive-only device and is legal to use in the UK. It does not intercept, decode, or record any communications.
Will it work across Europe?
TETRA is the standard emergency services radio network across the UK and most EU countries. The Sentinel is designed to detect TETRA activity in the 380–430 MHz band used by these networks. Legal status varies by country — please check local regulations before use.
Does it pick up speed cameras or radar?
No. The Sentinel operates exclusively on the TETRA frequency band. It is not a radar or laser detector.
Can it identify specific vehicles or listen to communications?
No. The device detects the presence of TETRA signal activity only. It does not decode message content, identify individual vehicles, or record any data.
When will my order ship?
Estimated delivery is 3 months from your order date. We will keep you updated by email throughout the process.
What if the ship date is missed?
If we are unable to fulfil your order within the estimated timeframe, you will be notified and offered a full refund of all amounts paid.