Jamming Detection

The Rinho device can detect cellular signal inhibition (jamming) and generate automatic alerts. This is crucial for vehicle security as inhibitors are frequently used in robberies.

What is it for?

Use case	Description
🚨 Theft alert	Detect inhibitor use during assault
📍 Last position	Save location before losing signal
🔊 Activate siren	Turn on sound alarm upon jamming
📱 Notification	Alert monitoring center
🔒 Engine lock	Activate fuel cut-off

Security: Jamming is a common technique in vehicle theft. Setting up alerts can save your unit.

Available Commands

🚨JMD Command

Jamming detection configuration

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⚙️CXJMD Command

Advanced sensitivity configuration

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How does it work?

Detection: The cellular modem reports interference via the +QJDR: JAMMED URC (internal check every 2 seconds)
Immediate activation: The JMD+ trigger activates on the first jamming report, without waiting for confirmation
Sustain: While the modem keeps reporting jamming, the signal stays active; if reports stop, the signal is held for 5 more seconds before turning off (avoids flicker from brief gaps between reports)
Action: The event engine executes configured rules
Recovery: When jamming stops being reported for 5 seconds, JMD- is triggered

The JMD+ trigger executes only once, on the first jamming report from the modem — there is no confirmation wait at the start. What does exist is a 5-second sustain window after the last report, so the signal isn’t turned off by brief gaps between reports (which arrive every ~2 seconds while the inhibition lasts).

Available Signals

Trigger	Event	Typical use
`JMD+`	Jamming start	Activate alarms, save position
`JMD-`	Jamming end	Send report, notify recovery