Blinking porch light

Blinking house, blinking front door, blinking back door, blinking lights.

On, Off: 1 Flash.
This means hello 👋 a greeting or sign of acknowledgement.

On, Off. On, Off: 2 Flashs.
A sign of acknowledgement is implied, however, this usually as a signified "End". Examples like, meaning goodbye, goodnight, turning in for now. *Or the end of any posible perceived nuisance whether it be; light, sound (excessive noise), vibration, etc.
**Implied apology

3 Flashes: I'm Home, come over.

3 Fast Flashes: Come Quick!

3 Fast, 3 Slow, 3 Fast: S.O.S / HELP

4 Flashes: Stop any perceiveable nuisance, please.

4 Fast: F***ing Knock it off.

All can be repeated with a few, or multipul, brief pauses or intervals of pause.

Blinking porch light

Blinking light rules for back door or porch light communication