Always On Device as Required by Barrier Codes. Alarm Goes Off Immediately When Triggered as Required by Barrier Codes. Can be Manually Reset or will Automatically Reset in 3 Minutes to Continue Siren. 7/15-Second Delay Allows for Adult Pass-Through. 120 dB Alarm Siren - Minimum 95 dB at 10 Feet . Programmable Entry/Exit Code. All Hardware Included for Gate, Door or Window Mount . Auto Low Battery Chirp . Water-Resistant. Operates on One - 9 Volt Battery (not incl.). Attractive 4-Color Retail Packaging (English/French).