... to 5 years .Lowest factory price alarm for rolling door,shop alarm lock,electronic alarm locklock alarm Certification: CE, Rohs, FCCWarranty: 3 ... mobile, rolling door and so on. alarm for rolling door,shop alarm lock,electronic alarm lockFeatures:1.Applied range: electro bile ... three times a warning tone. Details: 1. Alarm functionThe alarm lock uses low-voltage electric buzzer, when burglar prying, ...