HDCB4K-28A – 4K Wide Angle HD-over-Coax Bullet Camera

4K / 8 Megapixel
2.8mm Fixed Lens
164ft IR Range
Built-in Mic

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CATEGORIES: 8MP / 4K Security Cameras

Capture HD video footage with 8MP HD-Over-Coax 2.8MM variable focus lens with a maximum aperture of F1.6

131FT IR

High powered night vision with a minimum illumination of 0.005 LUX and IR.

110° View

Capture even more with an wide angled 110° view with no distortion.

IP67 Weatherproof

All metal aluminum housing for indoor and outdoor installations.


The HDCB4K-28A comes with a built in microphone to help you get even more data from every device.

The HDCB4K-28A

Optiview’s HDCB4K-28A is a 4K Wide Angle bullet camera with a built-in microphone. This camera is capable of producing a stunningly clear, colorful video with low illuminance enhancement for darker environments. In the darkest environments, on-board IR illumination kicks in. The HDCD4K-28A provides clear video capture in both day and night with high definition video output.

Infinity Scroll - Starlight
Infinity Scroll Image - Starlight V2


For challenging low-light applications, Starlight Technology offers best-in-class light sensitivity, capturing color details in low light down to 0.005 lux. The camera uses a set of optical features to balance light throughout the scene, resulting in clear images in dark environments.

Light Level
Lux Rating
Security / Outdoor Lights2.0 Lux
Clear Full Moon.01 Lux
Moonlight Cloudy Night0.01 Lux
Moonless Starry Night0.001 Lux

Commercial Grade Equipment

Built for endurance, this all-metal housing is rated IP67, which means it is protected from water and dust. Mount this camera anywhere with its 3-axis cable management bracket. Additional junction boxes and brackets are available for additional installation
options, and help further protect your cables and connections.

Infinity Scroll Image - Professional Grade Equipment V1

Get stunning clarity in your surveillance footage with full, 4K over coax cameras from Optiview. The HDCB4K-28A mini bullet camera comes with a wide angle 2.8mm lens and built in audio.

  • Starlight, 120dB True WDR, 3DNR
  • Max. 4K resolution
  • HD/SD switchable
  • Audio in interface, built-in mic
  • 2.8mm fixed lens
  • Max. IR length 40m, Smart IR
  • IP67, DC12V±30%
Image Sensor1/2″ 8.0 MegaPixel CMOS
Effective Picture (HxV)3840 ×2160
Electronic Shutter1/3 ~ 1/100,000s
Video Frame Rate15fps @ 4K; 30fps @ 4MP
Min. Illumination0.005 Lux @ F1.6 (Color), 30 IRE, 0 Lux (IR On)
Video Output1-channel BNC HD-over-Coax high definition video output
or BNC Analog video output (DIP Switch)
Max. IR LEDs Length164ft, Smart IR
IR On / Off ControlAuto (ICR) / Manual
Day/NightAuto (ICR) / Manual
Noise Reduction2D / 3D
OSD MenuSupport
BLC ModeBLC / HLC / WDR (120db)
Gain ControlAGC
White BalanceAuto / Manual
Smart IRAuto / Manual
Focal Length2.8mm
Angle of ViewH: 110.8°
Lens TypeFixed / Fixed Iris
Focus ControlAuto / Manual
Close Focus Distance70.87″
DORI – Detect276ft
DORI – Observe112ft
DORI – Recognize56ft
DORI – Identify26ft
Pan / Tilt / RotationPan: 0° ~ 360°

Tilt: 0° ~ 70°

Rotation: 0° ~ 360°

Audio1ch & Built-in Mic
Power SupplyDC12V±25%
Power ConsumptionMax 8W
Working Environment-22°F ~ 140°F (-30°C ~ 60°C) / Less than 95% RH (no condensation)
Transmission DistanceOver 984ft (300m) via 75-3 coaxial cable
Ingress Protection & Vandal ResistanceIP67
Dimensions (DxL)7.08″ × 2.76″ × 2.76″
WeightApprox. 1.2 lbs
Warranty1 Year
Helpful Links


Lens Type