The SOS button is lightweight 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 CR 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 lightweight 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 to