About This Complete system includes (1) 433-EC Cordless Monitor, (1) GBT-RI 10in x 30in Cordless Bed Pad, and (1) GCT-WI 10in x 15in Cordless Chair Pad The GBT-RI Bed Pad can be placed underneath the fitted sheet about shoulder height. It will send a signal to the monitor when pressure is removed from the pad. Place the cordless chair sensor pad on the seat of a firm chair. The pad will send a signal to the monitor when pressure is removed from the pad. The wireless alarm can be placed in a convenient location with the caregiver, up to 100 feet away from the cordless sensor pads. The alarm has a low, medium, high volume adjustment and a gentle chime alert. Both bed and chair sensor pads are pre-programmed and ready for use upon delivery. A total of six item can be used with this one alarm, allowing a caregiver to mix and match to best fit their needs. Monitor uses 3 'C' Size batteries (not inlcuded) or the AC-04 power Adapter (not included) Overview Color : White Brand : Smart Caregiver Corporation Power Source : ac adaptor or C Batteries Compatible Devices : Bed Sensor Pad, Chair Sensor Pad, Motion Sensor, Nurse Call Buttons Battery Description : battery_type_c