N911B Solar Infrared Sensor Alarm with Sound and Light 1. Material: ABS 2. Waterproof Rating: IP55 3. Charging Method: Solar ChargingDC Charging 4. Charging Time: 6-8 hours (tested under direct sunlight in summer; light intensity in different seasons may affect charging efficiency) 5. Sensing Distance: 5-8 meters, lateral sensing angle: 125 degrees 6. Operating Time (fully charged): Over 150 audible and visual alarms per 30 seconds of sensing, 8-10 rainy days of operation on a single charge, over 300 days in standby mode 7. Ultrasonic Model Features: 24-hour multi-stage high-frequency ultrasonic audible and visual alarm mode + night multi-stage high-frequency ultrasonic audible and visual alarm mode + 24-hour audible and visual alarm mode + night audible and visual alarm mode 8. Alarm Model Features: Level 1: 24-hour sensing audible and visual alarm mode, Level 2: 24-hour sensing audible and visual alarm mode with light and silence, Level 3: Night sensing audible and visual alarm mode, Level 4: Night sensing audible and visual alarm mode with light and silence 9. Battery Capacity: 400mA3.7V 10. LEDs: 6 flashing red LEDs 11. Solar Panel: 5V80mA polycrystalline solar panel 12. Sounds: 13 looping sound modes, including dog barks, gunshots, wolf howls, gong sounds, eagle calls, firecrackers, lion roars, pig slaughter sounds, explosions, beeping alarms, car horns, alarms, bells, and whistles 13. Alarm Sound: Low-frequency 129dB x 2 channels, high-frequency 12kHz-44kHz x 2 channels 14. Suitable for gardens, orchards, construction sites, farms, warehouses, and other places requiring security alarms and wildlife repellent