The SOS button is and portable, with a lanyard design that can be hung around the neck or put in the pocket and waist; it is Waterproof, can be used in the bathroom (Do not wear it in the shower or soak in the water). The wireless caregiver pager includes 1 receiver and 1 SOS call button, which is suitable for paralyzed patients / disabled / elderly monitoring /accidental fall patients / hospital bed care / pregnant women, etc. Audible/Visual Dual Alarm. When pressing the life caregiver call button in case of emergency, the caregiver pager will sound an alarm when it receives the signal, and the built-in LED indicator in the SOS area will flash red to alert the caregiver. The emergency alert system has 12 types of ring tones to choose from and 4 adjustable volume levels from 0db to 90db. A silent mode with LED flashing is available. The Senior Life Alert is powered by 1 x 2032 battery. (Not included battery) The alarm range of the receiver and emergency call button in the open area is 300 m (Because the signal of the emergency life alert pager receiver will be interfered by walls or metal, please put it next to the transmitter to avoid affecting normal use). The life alert button is and portable, with a lanyard design that can be hung around the neck or put in the pocket and waist; it is Waterproof, can be used in the bathroom (Do not wear it in the shower or soak in the water). The wireless caregiver pager includes 1 receiver and 1 SOS call button, which is suitable for paralyzed patients / disabled / elderly monitoring / accidental fall patients / hospital bed care / pregnant women, etc. How to modify and lock music? Press and hold the volume button of the receiver before plugging in the power socket. Plug in the power socket until the light of the receiver lights up, release the volume button, press the music button toadjust to the favorite music ringtone, press and hold the volume button again until When the light is on, press the transmitter twice immediately and the music is locked successfully. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Voltage: AC220V Product features: elderly care call night emergency call accident injury call family bed care Connection mode; Bluetooth wireless Product model :A89 Product name: Wireless doorbell/caller Transmitter: Uses CR2032 battery Remote control distance: 300M straight line in the open space Transmitter size :6.5 x 3.7 x 1.1CM Receiver size :8.1 x 6.4 x 2.5CM Music: 60 songs Volume: 5 speed adjustment Receiver: Plug-in use (220V) Material: Plastic Color: How to pair signals? Pairing : press and hold the volume button on the receiver for about 5 seconds (the light is on), release the volume button, then press the button immediately, the signal is successfully paired. Package Contents: 1 x transmitter 1 x receiver