Door bell &Door/Window Alarm – 2 Modes + Loud Siren
Easy installation – Simply stick it onto a door or window; no wiring needed.
Dual‑volume side switch – Choose between high (120‑130 dB) or low volume as needed.
Front mode selector – Push forward for Alarm (intruder deterrent), push backward for Doorbell (friendly chime).
Low‑battery indicator – Red LED flashes when power is low, so you always know when to change batteries.
Perfect for home security – Loud enough to scare away unwanted visitors and give you peace of mind.
Battery: 3 x LR44, 1.5V each
Operating frequency: 2.9–4 kHz
Standby current: ≤10 μA
Alarm current (high volume): Max 51 mA
Alarm current (low volume): Max 4 mA
Doorbell current (high volume): Max 90 mA
Doorbell current (low volume): Max 4 mA
Alarm sound level (high volume): 120–130 dB
Alarm sound level (low volume): 100–110 dB
Battery life (high volume, continuous alarm): approx. 1 hour
Battery life (low volume, continuous alarm): approx. 20 hours
Low battery warning: 3V
1. Installation Instructions
Keep the surface of the door/window clean and dry. Peel off the adhesive backing, and attach the main unit and the magnetic strip to the door (or window) frame and the door (or window) leaf respectively.
Note: The distance between the main unit and the magnetic strip must be greater than 1 cm.
2. Mode Selection & Volume Adjustment
Mode selection: Push the front toggle switch forward for Alarm Mode; push it backward for Doorbell Mode.
Volume adjustment: In Alarm Mode, slide the side switch to the "High Volume" or "Low Volume" position. When someone opens the door or window, the device will emit an alarm sound of up to 120–130 dB, effectively deterring intruders.
3. Low Battery Alert
When the device is in Alarm Mode (with the side switch set to either High Volume or Low Volume) and is not triggered, if the red LED on the main unit flashes, it indicates that the battery power is low. Please replace the battery promptly to ensure normal operation.
