Solar motion sensor alarm Outdoor motion sensor alarm have sturdy ABS casing, IP65 Waterproof dustproof, sensing angle of is 110°, which will widely capture any movement within 3-8 meter activate the alarm to scare animals and thieves. Alarm siren deterrent devices The siren horn sound is about 110db and bright strobe has 6 led light, solar alarm motion detector with sound can be heard and saw 200m in open area.