Pixel: 2 million (dpi). Horizontal resolution: 2 million (TVL). Minimum illumination: 0.001 (Lux). Lens: 3.6 (mm). Signal to noise ratio:> 48 (DB). Working temperature: -20-40 (?). Power supply voltage: 220 (V) (V). Surveillance camera lens: 1G3P. Lens focal length: 4.0MM. Irradiation distance of infrared lamp: 10M. 2million pixels single light: YIIOT 2 million (infrared night vision-2.4GWiFi). 2million pixels dual light: YCC365 2 million double light (full-color night vision can light up 2.4G dual-band WiFi).