Telecamera IP 5G WiFi 4G doppia lente telecamera di sicurezza tracciamento automatico visione notturna a colori
Why Choose Dual-band WIFI 2.4Ghz & 5Ghz?. The signal is better than 5Ghz WIFI, and the transmission distance is farther. To be honest, 4MP + 4MP ≠ 8MP, 4K 8MP must match the resolution 3840×2160P or above.