This wireless caregiver pager is the ideal solution for patients, the elderly, pregnant women and children seeking help at home. Features: The caregiver pager is incredibly easy to carry, fitting conveniently in pockets, and can be worn around the neck using the included pendant. With an impressive open reception range of 350m, and has super through-the-wall capability to ensure clear, loud communication. Featuring 38 music songs to choose from and 4 levels of volume adjustment, the caregiver pager system offers a personalized and pleasant alert experience. Featuring a built-in battery, ensuring convenience and eliminating the need for external power sources. The system features a thoughtful design with two different call buttons for setting distinct ringtones, supporting simultaneous use by two individuals. Specifications: Material: ABS Wireless Frequency: 433MHZ Wireless Reception Range: 350m Voltage: Receiver: 100-250V Call Button: 12V Power Supply Method： Receiver: 3 x AAA Batteries (included) Call Button: 1 x 23A Battery (included) Product Size: Receiver(LxWxH): 7.3 x 1.7 x 7.3 cm Call Button(DxH): 6 x 1.4 cm Lanyard Length: approx. 40 cm Package Contents: 1 x Receiver 2 x Call Buttons 1 x Manual Please note: Due to manual measurement, there might be a tolerance in the product size. Due to the lighting effects and shooting angles, the color of the item and that shown in the picture might have a nuance.