1. Hang the door knob strap (attached to the snap hook) around the door handle (for window alarm setup, an appropriate hook
　next to the window may be needed to hang the door knob strap or snap hook).

2. Insert the closed v-shaped spring blades into the gap between the door and its frame (or window and its frame) to complete
　the burglar alarm setup.

3. When the door/window is opened by an intruder, the v-shaped spring blades will snap open and instantly activate the alarm
　siren and strobe light, effectively alerting the intrusion and scaring off the burglar.

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