Safety and Security β FAQ
Can renters legally install glass break sensors?
Yes. Adhesive-mounted sensors qualify as personal property, not lease modifications. They install without drilling, painting, or wiring. Remove them when moving to avoid deposit disputes. Always check lease language about 'security devices' for specific restrictions.
How many sensors do I need for a two-bedroom apartment?
Cover every ground-floor window plus any second-story windows accessible from fire escapes or adjacent roofs. Most two-bedroom apartments require 6-8 sensors. Prioritize bedrooms and living areas over bathrooms. Sliding glass doors need dedicated sensors within 10 feet.
What's the difference between vibration and acoustic glass break sensors?
Vibration sensors detect physical impact before glass breaks, triggering earlier but risking false alarms from environmental shaking. Acoustic sensors analyze sound frequency of shattering glass, reducing false alarms but reacting slightly later. Dual-tech sensors combine both for optimal accuracy.
Will my cat or dog trigger false alarms?
Modern sensors filter out sounds below 90dB, eliminating most pet noise. Vibration sensors with sensitivity adjustment prevent triggering from pets jumping on sills. Position sensors away from areas where pets routinely bump windows. Test modes let you verify pet immunity before arming.
How long do batteries typically last in glass break sensors?
Quality sensors last 18-36 months on lithium batteries. Alkaline batteries require yearly replacement. Low-battery alerts typically trigger at 20% remaining power, giving 2-3 months warning. Extreme temperatures near drafty windows can reduce life by 30%. Always use manufacturer-recommended battery types.
Can I take my sensors when I move?
Absolutely. Adhesive-mounted sensors remove cleanly with dental floss or fishing line sawing motion. Clean residue with rubbing alcohol. Save original packaging for transport. Document original window positions with photos to speed reinstallation at your next rental. Most sensors survive 3-4 moves.
