Contactless Hand Wave Wireless Doorbell – Prevents Germ Spread with Smart Sensor Technology

Highlights

• Infrared sensor detects hand movement (5-15cm range). Hygienic operation for homes/offices.
• Withstands heavy rain and dust. Ideal for gates/balconies in desert climates.
• Wide Sensing Range: The doorbell automatically detects hand waves from a distance of 10-15 cm, ensuring quick and efficient operation.
• 3-level rotary knob: Low (quiet areas), Medium (homes), High (busy streets).
• 3M adhesive base for no-drill installation. Compatible with wood/metal/glass surfaces.
• Switch between classic "ding-dong" and electronic beep via hidden button.
• Sync multiple units for large villas/warehouses. 300m wireless range.
• UV-resistant casing tested at -20°C~70°C. Recyclable packaging.
• 2.4GHz frequency with FHSS encryption ensures stable signals in crowded areas (up to 30 devices nearby). Ideal for apartments/shopping malls.