SECO — Safe Engine Cut-Off

Safe Engine Cut-Off (SECO) is a configurable relay control feature that can safely cut or restore vehicle engine power.

How It Works

The device uses output XP1 to control a relay connected to the engine ignition circuit. The system enforces safety conditions before activating the cut-off:

1. When GNSS is available: GNSS-indicated-speed must remain under 10mph (17kph) for at least 20 seconds
2. When GNSS is not available: The built-in motion sensor must remain in no-motion state for at least 5 minutes
3. Output XP1 is set LOW to cut the engine

Signals

Signal	Description
G00	SIGNAL_SECO_STANDBY — SECO armed, waiting for safe condition
G01	SIGNAL_SECO_ACTIVE — engine cut-off active
G02	SIGNAL_SECO_CANCELLED — SECO canceled before activation

Outputs

Output	SECO State	Level
XP1	Engine CUT	LOW (0V)
XP1	Engine RESTORED	OPEN DRAIN

Notes

1. Safe Engine Cut Off requires a professional installation that assures that the vehicle's Engine Cut is correctly controlled by device's Output 1. Refer to Installation section for further details and installation diagrams. If you are not sure of your installation or have never run a controlled test, DO NOT PROCEED.
2. Safe Engine Cut Off is designed to MINIMIZE the risks of a vehicle accident when doing this operation, BUT IT CAN NOT ASSURE A RISK-FREE CUT OFF. DCT does not assume any responsibility, and shall not be liable of any damages caused to PERSONS, vehicles or any other asset when doing this operation. By proceeding you assume full responsibility of this operation hence releasing and discharging DCT of any liability caused by it.
3. Finally, DO NOT PROCEED if you do not fully understand the risks involved in disabling the engine of a vehicle in motion.
4. SECO requires hardware wiring of XP1 into the vehicle's ignition circuit.
5. Always test SECO in a safe, stationary environment before deployment.