Entry Chime Mode:
Mount it beside door and it will automatically give Ding Dong melody when someone open the door.
Entry Alarm Mode:
It will automatically alert high output siren when someone is opening the door.
Easily mounted on door frame by adhesive tape.
Magnetic sensor detects entry.
3 x LR44 Batteries
Product size (H x W x T):
65 x 32 x 11 mm