Wireless Strong Flash Music Doorbell for Elderly and Hearing Impaired with Illuminated Light Features: 1. Designed with an elegant polished finish, offering a sleek and modern appearance. 2. Seven-color flashing lights provide visual alerts, making it ideal for individuals with hearing impairments. 3. Receiver operates on 3 x AA batteries (included), portable and easy to use; transmitter uses 1 x AAA battery (included), simple to replace. 4. 16 selectable melodies allow for personalized customization to suit your preferences. 5. Strong anti-interference performance ensures reliable signal transmission. Operation: 1. When the outdoor button is pressed, the transmitter emits a blue light and the receiver plays the selected melody with synchronized seven-color flashing lights. 2. Three operating modes: flash only, sound only, or sound and flash simultaneously. 3. Unique flashing light design enhances accessibility for seniors, hearing-impaired individuals, and patients. Specifications: Color: White Model: TMT-288 Dimensions: 9 x 6.2 x 3.3 cm Power Source: Battery-powered Operating Voltage: 4.5 V Melody: 16 Chimes Power Consumption: 1 W Application: Suitable for home, office, elderly care, hearing-impaired individuals, and patient alert systems Package Included: 1 x Wireless Doorbell Set (Transmitter and Receiver) Notes: 1. Due to variations in monitor displays, the actual product color may differ slightly from images. The style, however, matches the pictures shown. 2. Manual measurement may result in a slight variation of 1–3 cm. Thank you for your understanding.