Dingdong: Supports RF 433MHz Dingdong. WIFI connection: 2.4GHz WiFi, supports (802.11 b/g/n). Night vision: dual filter automatic switching, 6 850nm Φ 28Mil high-power infrared lights. -Wireless connection, ultra-low power consumption, remote active wake-up, capable of supporting multiple accounts for simultaneous online viewing.
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