Indoor-use sensor alarm that alerts with sound in response to movement. Manufacturer Model Number: PIR-AL100 Indoor security sensor / alarm / chime / battery-powered Battery Life: Approximately 3 months (when chiming 10 times a day) for "Chime" setting / Approximately 3 months (when alarming once a day) for "Alarm" setting Alarm/Chime Volume: Approximately 80dB/m Detection Area: Detection distance (approx. 5m) / Horizontal angle (approx. 60°) / Vertical angle (approx. 5°)* At room temperature of 20°C. Operating Temperature: 0°C~40°C (Indoor use only) Size Approx. H12.3 x W8.9 x D8.9cm Weight: Approx. 183g (excluding batteries) Material: ABS Country of Origin: China Detection Method: Human body temperature detection (pyroelectric sensor) Batteries Used: AA batteries - Model Name: ELPA PIR-AL100 - Application: Indoor use only - Design: Alarm with sensor - Features: Alerts with sound in response to movement Thank you for viewing.