90~250V working voltage
433.92MHz+ / -280KHz working frequency
10 mW power consumption
Up to 110db Volume
Within 600ms device wakeup
Two 18650 batteries
Eken video doorbell 2 phone has built-in 8GB micro SD card, HD video phone, two-way audio, 166° wide-angle camera lens, night vision video door phone, wi-fi compatible, notification push to mobile device, pir motion detection, low power consumption, compatible for android and iOS.