Check the listing for details. CallToU Pager/Call Button Emergency System w/Plug-In Receivers/Wireless Xmitters. Color: White, Condition: Used, Made in China. Listed at 30.00 USD. The CallToU Pager/Call Button Emergency System is a call button system manufactured by CallTou. Included ars: - 3 pendants - 3 wireless receivers - 2 double-sided adhesive tape pads - 2 lanyards - mini screwdriver - instruction booklet The system includes plug-in receivers and wireless transmitters, making it convenient for patient/family member to call for assistance without having to worry about being tethered to a phone. Transmitters can be affixed to a surface (ie. in bathroom next to toilet) by using the included adhesive tape pads. This emergency system provides peace of mind for both caregivers and patients in need of assistance. Wireless transmitters use 12V/23A battery