Smart security is the most asked-about topic when I talk to people about home automation. The appeal is obvious: the ability to see who is at your door from your phone, get alerts when a window opens while you are away, or have cameras record footage without a monthly professional monitoring fee. The reality is more nuanced than the marketing suggests, but for apartment dwellers in Hungary, there are genuinely useful and affordable options.
This guide covers what I have installed and tested in my own apartment in Budapest's 7th district, along with what I have learned from helping friends set up their systems elsewhere in the city.
Indoor Cameras: What Actually Works
An indoor camera is the simplest entry point to smart security. You place it on a shelf, connect it to your Wi-Fi, and it records footage when it detects motion. The practical value depends heavily on what you expect from it.
What a camera does well: it lets you check on your apartment remotely, records evidence if something happens while you are away, and can alert you to unexpected motion. What it does not do well: prevent anything from happening. This distinction matters because some people spend significant money expecting a camera to provide security it cannot deliver on its own.
Cameras I have tested
The TP-Link Tapo C200 is the camera I recommend most often. It costs around 10,000 HUF at Hungarian retailers, has a motorised pan-and-tilt mechanism, records to a microSD card (no cloud subscription required), and the image quality is adequate for identifying people and events. The night vision works well enough for a standard room.
The Xiaomi Mi Home Security Camera 360 is a similar device at a similar price point. Image quality is comparable. The main difference is the app ecosystem: if you already use Xiaomi smart home devices, it integrates into the Mi Home app alongside them. Otherwise, the Tapo app is slightly more intuitive.
Image: Wikimedia Commons
Cloud storage vs local storage
Most smart cameras offer cloud storage as a subscription, typically 3-10 EUR per month. For Hungarian users, I recommend local storage on a microSD card instead. The reasons are practical: you avoid recurring costs, footage stays under your control, and you do not depend on server availability. Both the Tapo and Xiaomi cameras support microSD cards up to 256GB, which stores several weeks of motion-triggered recordings.
Door and Window Sensors
Contact sensors are small, battery-powered devices that detect when a door or window opens. They are among the most useful and least expensive smart home security devices. A sensor on your front door can notify your phone whenever the door opens while you are away. Sensors on windows can alert you if a window is opened unexpectedly.
I use Aqara door sensors, which require an Aqara or compatible Zigbee hub. They have been running on their original batteries for over a year. The alert delay is under two seconds from the door opening to the notification arriving on my phone, which is fast enough to be genuinely useful.
For a simpler setup, the Philips Hue door sensor works within the Hue ecosystem and can trigger lighting changes alongside sending notifications. Opening the front door after sunset can automatically turn on the hallway light, which doubles as both a convenience and a subtle security measure.
Smart Doorbells
Video doorbells have become popular, but they present specific challenges in Hungarian apartment buildings. Most Hungarian apartment buildings have a shared entrance with an intercom system. Installing a video doorbell on a shared door is usually not practical or permitted. However, if your apartment has its own entrance door in a hallway, a video doorbell can work well.
The Ring Video Doorbell and Google Nest Doorbell are both available in Hungary. Ring requires a subscription for video history (around 4 EUR per month). The Nest Doorbell stores three hours of event history for free, which is enough for most apartment use cases.
Hungarian Apartment Consideration
Before buying a video doorbell, check whether your apartment building's management (kozos kepviselo) allows installation on the shared hallway wall. Many Budapest apartment buildings have rules about modifications to common areas. A battery-powered doorbell that attaches without drilling is more likely to be accepted than one requiring wired installation.
Motion Sensors and Alarm Systems
A complete DIY security system combines sensors, a siren, and a hub that coordinates them. Several manufacturers now sell these as kits that you set up yourself without professional installation.
What a typical kit includes
- A central hub that connects to your Wi-Fi or Ethernet
- One or two door/window contact sensors
- A motion detector (PIR sensor)
- A siren or alarm speaker
- Key fobs or a keypad for arming and disarming
The Ajax Security system is popular in Hungary and has a good reputation for reliability. The starter kit costs around 60,000-80,000 HUF. It uses its own wireless protocol (Jeweller) rather than Wi-Fi or Zigbee, which gives it better range and battery life than most alternatives. The app is well-designed and supports Hungarian.
For a more affordable option, the Xiaomi Smart Home Security Kit works with the Mi Home app and can be combined with other Xiaomi smart home devices. The components are significantly cheaper, but the system is less robust than Ajax and relies on Wi-Fi, which can be a limitation in larger apartments.
Network Security: The Overlooked Foundation
Every smart security device connects to your home network. If your network is insecure, your security devices become a vulnerability rather than a protection. This is worth taking seriously.
- Use a strong, unique password for your Wi-Fi network
- Enable WPA3 encryption if your router supports it (WPA2 at minimum)
- Keep your router's firmware updated
- Consider creating a separate guest network for smart home devices, isolating them from your computers and phones
- Change default passwords on all security cameras immediately after setup
The Hungarian National Media and Infocommunications Authority (NMHH) provides guidelines on home network security that are worth reviewing if this is new territory for you.
Privacy and Legal Considerations
In Hungary, recording video inside your own apartment for personal security purposes is legal. Recording shared areas (hallways, stairwells) or public spaces raises legal issues under both Hungarian law and GDPR. If your camera can see beyond your own apartment, consult the relevant regulations before installing it.
Indoor cameras with microphones also record audio. Under Hungarian law, recording conversations without the knowledge of all participants can be illegal. If your camera has a microphone and is placed where visitors might be recorded, you should be aware of this.
What I Would Buy Today
If I were starting from scratch with a budget of around 40,000 HUF (roughly 100 EUR), I would buy a TP-Link Tapo C200 camera for the main living area, an Aqara hub with two door sensors for the front door and a window, and a smart plug to connect an existing lamp to motion-triggered automation. That gives you remote monitoring, entry alerts, and automated lighting for about the cost of a single month of professional security monitoring.
For a more comprehensive setup with a proper alarm siren and motion detection, the Ajax starter kit is worth the additional investment. It is the most polished DIY security system I have used, and the fact that it works well in Hungarian apartments with thick walls gives it a practical advantage over Wi-Fi-dependent alternatives.
Image: Wikimedia Commons
Smart security works best as layers. No single device provides complete protection, but a combination of cameras, sensors, and good network practices creates a system that is more secure and more convenient than a traditional setup, at a fraction of the cost of professional monitoring.