The HD Lighthunter IR Fixed Bullet Network Camera from Uniview uses a 4 mm lens and a 1/2.7" progressive scan CMOS. It offers 5MP 2880x1620 resolution at 30 fps. 

IPC2125SB-ADF40KM-I0 makes use of LightHunter technology and 120B WDR to ensure crystal clear high-quality images in both low and strong lighting situations. The built-in Smart IR allows night vision visibility up to 40 meters. 

Replaces and interchangeable with IPC2125SR3-ADUPF40

Uniview IPC2125SB-ADF40KM-I0 HD Lighthunter IR Fixed Bullet Network Camera features:

• High-quality image with 5MP, 1/2.7"CMOS sensor
• 4MM lens 
• 5MP (2880*1620)@ 30/25fps; 4MP (2560*1440)@ 30/25fps; 3MP (2304*1296) @30/25fps; 2MP (1920*1080) @30/25fps
• IR-cut filter with auto switch (ICR)
• Ultra 265, H.265, H.264, MJPEG
• 2D/3D digital noise reduction
• LightHunter technology ensures ultra-high image quality in a low light environment
• 120dB true WDR technology enables clear image in a stronger light scene
• Support 9:16 Corridor Mode
• Built-in Microphone
• Smart IR, up to 40m (131ft) IR distance
• Supports 256 G Micro SD card
• IP67 protection
• Support PoE or 12vdc power supply