Articles
Practical guides to help you decide with confidence, written by the people who design the products.
What does Grade 3 mean for an alarm siren?
Grade is not a marketing term. It is the risk level the siren has been tested for, and it even affects the security of your home.
Wired or wireless alarm: which to choose
The answer mainly depends on whether your home has conduits. See the pros and cons, and why most installations today are hybrid.
How to choose an outdoor siren
Certification, loudness, vandal protection, colour. Five questions worth asking before a siren goes on your wall for years to come.
Bring Sigma to your market.
We are looking for distributors abroad for our alarm systems and Grade 3 and Grade 4 sirens, designed and made in Greece since 1977. Get in touch and let's talk about working together.