Long Range Wireless Doorbell with Up to 300M / 1000 Ft Range in Open Areas. Ideal for Homes, Offices, Hotels, Dorms, and Factories. Features a Weather-Resistant Design for Outdoor Use, Suitable for All Weather Conditions. Operates Reliably in Both Wet and Dry Environments. Easy Outdoor Installation with Included Mounting Accessories. Doorbell Kit Includes 16 Selectable Melodies and 5 Adjustable Volume Levels, Ranging from 0 to 80 dB, Ensuring Clear Audibility Across Multiple Floors. Equipped with a Bright LED Indicator Light, Ideal for Elderly or Hearing-Impaired Users. Includes a Sleep Mode Function: When Activated, the Doorbell Silently Alerts with a Flashing Blue LED, Preventing Disturbance. Simple Setup – Plug in the Receiver and Mount the Transmitter on Walls or Door Frames Using the Provided Adhesive Tape. Stay Notified Whether You're in the Kitchen or Garden – Never Miss a Visitor.