• Easy to install; no wiring required
• Optochemical Sensor Technology is resistant to nuisance alarms, extends sensor life
• Provides Fail-Safe notification
• Tamper-resistant locking feature
• Easy-access Test/Reset Button
• Red Alarm LED
• Loud 85 decibel horn
• Battery-operated; 9V alkaline battery included
• Audible low-battery warning signal
• 3-year limited warranty
• Mounting Hardware included