Features: Easy to use: Elderly and pregnant users can easily carry this caregiver call bell with its convenient hanging rope design. The large 27mm button allows for one-touch calling, ensuring quick assistance whenever needed. Adjustable volume and ringtone: Offers 110dB loud sound with 4 adjustable volume levels, customizable to individual preferences. Includes mute mode for silent operation, providing a peaceful environment. Versatile and personalized: Features over 60 pre-set ringtones with the option to assign unique ringtones, making it easy to identify the caller. Long-range effectiveness: Provides an effective range of 20-40 meters, even through walls, ensuring the signal is received throughout the home. Offers reliable communication for immediate assistance. Durable and reliable: Constructed with high-quality materials for long-lasting performance. Sturdy design ensures durability and dependable function when needed. Specifications: Battery: 12V 23A Signal Frequency: 433MHz RF Max Volume: 110 dB (4 adjustable levels) Voltage: AC110V-220V Operating Temperature: -10°C to 50°C Material: PC Button Dimensions: 7.2 x 4.5 x 1.8 cm Speaker Dimensions: 9.3 x 5.8 x 2.8 cm Package Size: Approx. 11.6 x 11.6 x 8.6 cm Package Weight: Approx. 150 g Package List: 1 x Call Bell Set (1 button, 1 speaker)