[Loud ] The motion sensor alarm up to 129 decibels enough to scare away the unpopular "explorer". motion detector alarm are red and blue LED lamp beads used for bright flash. Combination of strobe warning light and horn allows transmission of both visual and audible signals together for better warning. [Built-in 13 sounds] Sensitive motion sensor are 13 kinds of music by default. [Multiple operation modes for any situation] The motion detector alarm light has 4 modes of operation. [Advanced solar power charging] alarm motion detector work non-stop while the solar power is charging, maintenance-free and easy to install. [Easy Installation & Widely use] Wall mount, making it easy to install. The motion sensor noise maker are widely used in warehouses, factory, school security, farm, orchard, villas, garden, yard and other need security alarm places. Solar Panel:5V 130mA silicon panel Charging method:solar charging Charge time: 8 hours Working time:sound and light alarm 30S 100 times, Full power: 8-10 days, power off standby 300 days Alarm: low frequency 129DB*2 channels, with 13 built-in sounds. Waterproof grade: IP55 Battery:built-in 3.7V 1200mAh 18650 lithium battery Motion sensor distance/angle:5-8M (affected by temperature) Installation: Ground insert / Wall mount Motion Sensing Functional mode: Mode 1: 24 hours flashing + Alarm sound Mode 2: 24 hours flashing, no Alarm sound Mode 3: Flashing + Alarm sound only at night Mode 4: Flashing only at night, no Alarm sound Colour:As Shown Material:ABS Package Contents: 1 * Solar Motion Sensor Alarm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.