Wireless SOS Emergency Caller Alarm System See linked products below for the batteries req’d..(1 x CR2032 and 3 x AAA batteries. Specifications: Model: 927865 Material: Plastic Color: Blue, Red Size: As the picture shows Scope: 0-180 meters Volume: ≥80 (dB) Power by: 3* AAA battery & 1* CR2032 battery（batteries not included）SEE LINKED ITEMS FOR BATTERYS Description: This device is designed for Both Caregiver and Patient/Elderly/Resident/Handicapped/Sick etc, calling for Help at home.When they need help, no need to yell to inform people, just click the call button, then the Main Unit will send call to inform the carer. Waterproof Transmitter/Push Call Button . Safe from Meal/Soup Splash. Can give support to be Installed in the bathRoom. Patient call alert alarms for sale in mansfield FREE uk delivery on orders over £45 SEE BELOW FOR UPGRADED MODEL ‘ WIFI S.O.S Pager Alarm with App, alerts the in house receiver and “Pages” the app on a MOBILE Phone… NO SUBSCRIPTION REQUIRED. and multiple recipients can be added …. 2 Options a) In house Alarm with One Watch and One Pendant or b) In house Alarm with 2 Pendants’