Wireless Caregiver Pager Call Button Professional Rechargble 3280.8ft Range Nurse Call System for Elderly Patient Monitoring SOS Alarm System

STABLE SIGNAL AND ANTI INTERFERENCE: Stable signal with 1000m distance ; Provides enhanced antiinterference function for the patented pairing technology. RECHARGBLE AND PORTABLE: Equipped with a 500mA lithium battery and a low battery indicator, the CALL button can be d in about 3 hours, with a time of up to 30 days. The receiver can be d in approximately 3 hours and remain d for up to 7 days. CALLER ID AND SY TO EXPAND: The receiver has a caller ID function that tells you who is seeking help; the system can be expanded for more receivers and more call buttons. Item Type: Wireless Caregiver Pager Call Button Material: ABS Transmitter Built In Battery: Lithium Battery 500mah Receiver Built In Battery: Lithium 500mah Frequency Range: 43300CMHz Receiving Sensitivity120dBm Operating Temperature25~65 Degrees Celsius Power Failure Memory Function: Support Number of Connections: 1 To 8