4 - 2      
• Impedance is the resistance between the electrode pads that the defibrillator must overcome to 
deliver an effective discharge of energy. The degree of impedance differs from patient to patient 
and is affected by several factors including the presence of chest hair, moisture, and lotions or 
powders on the skin. If the “Shock canceled. Press pads firmly to patient's bare skin” voice prompt is 
provided, make sure that the patient’s skin has been dried and chest hair has been clipped. If the 
prompt persists, change the electrode pads.
4.2 Screen Display (for Equipment Configured with the Screen)
(1) ECG rhythm: displays one ECG waveform acquired from the electrode pads if 
ECG Display is set to On. 
(2) Runtime area: displays the equipment's operating time since powered on. 
(3) CPR time
(4) Number of delivered shocks
(5) Record icon: available when the sound recording function is enabled.
(6) Network type indicator
• : indicates the equipment is configured with the Wi-Fi module, and is 
connected to the AED ALERT system through the Wi-Fi network. 
•
4G: indicates the equipment is configured with the cellular module, and is 
connected to the AED ALERT system through the cellular network. 
(7) Battery status indicator: indicates battery status. For details, see 6Battery. 
(1)
(2)                  (3)                       (4)         (5)       (6)       (7)