Best Home Alarm Systems — GSM & Wi-Fi + Mid-range (2026)
1 home alarm systems matching connectivity “GSM & Wi-Fi” + price “Mid-range”, hand-picked from UK Amazon listings.
#1 Pick
Olympia Protect 9878 GSM Premium Alarm System Set with Outdoor Siren, Plug & Play up to 32 SensorsRated 4.0 out of 5 stars (480)
- GSM & Wi-Fi
£149.99
Pros
- GSM module sends alerts even if broadband or Wi-Fi goes down
- Plug & play setup, expandable to 32 sensors
- Outdoor siren included in the base set
Cons
- App experience less polished than mainstream US/UK brands
- SIM card needed for GSM alerts, adding a small running cost