Wireless Home Alarm: 4 optional working modes, you could choose: 24 hours with flash and alarm, 24 hours with flash but no alarm, 12 hours with flash and alarm, 12 hours with flash but no alarm Solar Alarm Siren: After being fully charged in the sun, the alarm sound can work for about 30 days. No worry about running out of power IP65 Waterproof: Water resistant with a sturdy casing, allows the solar alarms to Outdoor for good performance all year round and in all climates Motion Detector: The sensitive motion sensor detects any movement within a radius of 5-8m and activates the audible alarm, the sound occurs and the strobe light turns on Usage: You can use in the house, garden, farm, meadow, barn, garage, yard, etc.