SMART WELCOME SENSOR

This standalone, all‑in‑one doorbell alarm is essential for alerting you to intruders or visitors. The PIR motion‑sensor alarm is ideal for shops, offices, homes, and businesses, notifying you whenever movement is detected. Its simple operation and installation make it an excellent home‑security solution.
Power mode: This doorbell has two power options: a 9–15 V power adapter and 3 AAA batteries (adapter and batteries not included; you must purchase them separately). Using batteries is more convenient since it removes placement limitations, while the power adapter extends the device’s lifespan.