Feature: 1. MOTION SENSOR ALARM: The outdoor motion sensor alarm adopts a sturdy ABS shell, IP65 waterproof and dustproof, with a sensing angle of 120 °. Widely catch any movement within a range of 5 to 16 meters and activate the alarm. 2. ALARM HORN DETERRENT DEVICE: The sound of the alarm horn is about 129db, and the bright flashing light has 12 LED lights. A solar powered alarm with sound can be heard and seen at a distance of 200 meters in an open area. 3. SOLAR AND USB CHARGING: Our motion sensor alarm supports both solar and USB charging methods. Solar energy as its main power source and USB charging as a backup power source for prolonged rainy days, ensuring its uninterrupted operation. 4. EASY TO INSTALL AND WIDELY USED: Please hanging anti theft alarms in sunny areas. The motion detection alarm is suitable for farms, camping, homes, gardens, shops, courtyards, and other places that require motion sensor alarms. 5. IDEAL REPLACEMENT: With no wiring needs, the installation of this doorbell is very easy, making it an ideal replacement for the old and damaged parts, for better user experience Specification: Item Type: Solar Doorbell Material: ABS, Monocrystalline Silicon Sensor Battery: 3.7V polymer battery x 1 Battery Capacity: 500mAh (sensor shipped with built in battery) Solar Panel Specification: Monocrystalline silicon 5.5V 100mA Working Distance: Approx. 200 to 300m / 656.2 to 984.3ft Low Sensitivity: Approx. 5 to 8m / 16.4 to 26.2ft Medium Sensitivity: Approx. 8 to 12m / 26.2 to 39.4ft Good Sensitivity: Approx. 13 to 16m / 42.7 to 52.5ft Induction Angle: 120 °. Package List: 1 x Sensor 1 x Receiver1 x Long Screw 4 x Short Screw 5 x Expansion Tube 1 x Needle 1 x Universal Head 1 x Manual