Just got my hands on the G30 wireless security sensors and I'm pretty impressed so far! The pack of 5 sensors feels like a steal for the price.

Installation was a breeze with the included double-sided tape - no drilling or complicated setup needed. I had them up on my windows in under 10 minutes. The 120dB alarm is NO JOKE though - definitely scared my cat the first time we tested it!

Love that you can customize the alarm duration from 1-60 minutes. I set mine to 30 seconds which is enough to alert me without being obnoxious. The low battery indicator (blue flashing light) is a nice touch too.

These work great on both windows and doors in my apartment. The magnet sensitivity is spot on - alarms trigger exactly when they should without false alerts. Only minor gripe is making sure the gap stays under 0.6 inches when closed.

Overall? Fantastic value for basic home security. Way better than those cheap stick-on alarms, and no monthly fees like professional systems. Definitely recommend for renters or anyone wanting simple, effective protection.