Home alarm: contact and presence sensors that actually warn you in time
How to build a home alarm in Medellín with door, window, and presence sensors—without generic sirens or apps that depend on another brand's cloud.
Category
Security
4 articles in this category.
Home security cameras without cloud or subscription
How to set up Wi‑Fi or wired security cameras in your Medellín home with local recording, no cloud plans, and control from your own app.
Smart lock for security doors in Medellín
How to choose a mortise smart lock for a security door in Medellín: Zigbee and Matter, Tuya, TTLock, and which models ship to Colombia.
Contact sensors: your home knows what’s open and what’s closed
How contact sensors work for doors, windows, drawers, and closets, what you can automate with them, and where to place them in your Medellín home.