Features: 1.Built in Music Memory Chip: Comes with 4 levels volume adjustment and 32 ringtones options; No interference and no confusing, loud sound 2.High Efficiency: Wireless caregiver pager with 433Mhz high frequency working transmission, the signal can easily pass through walls 10?25m, ensuring you never miss a call for help 3.Low Power Consumption: The call bell with Built in low power chip, low energy consumption, no heat, can be plugged in for a long time, convenient and durable 4.A Good Helper: Great for caregiver and patient, elderly, resident, handicapped, sick freedom while still calling for help at home 5.Wide Application: Suitable for different places, from small hotels, hotel rooms, bachelor apartments to suites, villas can be heard at 85 decibels Specification: Item Type: Wireless Caregiver Pager_x000D_ Material: ABS PackageList: 1 x Transmitter 1 x Receiver