Old Hks Turbo Timer, Doesn't Turn Off Engine Immediately With Handbrake Down

[Moodles2]

When my handbrake is down, and I turn the key to turn the engine off, it doesn't turn off straight away, but instead beeps 4 times over 4 seconds before it turns off. Is this normal for old HKS turbo timers?

I was thinking since I already have the HKS TT loom, I might get a newer HKS that doesn't have this behaviour, that will instead turn the engine off straight away with the handbrake down and key turned to off. I was also thinking about making a killswitch for my current timer, maybe put it inline with the ground wire so there's no hint of a turbo timer if I ever get pulled over.

[TKR]

never heard that before ... maybe its a warning setting letting u know handbrake down light buzzing noises for head lights left on etc ?