IP Cameras › IPC-B312-ADZK
UniarchWDR VF IR Bullet
2MP WDR VF IR Bullet
IPC-B312-ADZK
2MP motorized varifocal (2.8–12mm) IR bullet network camera — 120dB true WDR, ultra motion detection, Smart IR up to 50m, built-in mic, IP67 outdoor body.
2 MP · 1080P@30fps2.8–12mm · motorized varifocal, 4.3XUltra Motion · human/vehiclePoE / DC12V · dual powerIP67 · outdoorMic · built-in audio
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The Uniarch IPC-B312-ADZK is a 2MP bullet network camera with a motorized varifocal lens (2.8–12 mm, 4.3X zoom) that lets the field of view be adjusted remotely after installation — no re-mounting needed to reframe the shot. It combines 120 dB true WDR for strong-light scenes, ultra motion detection (human/vehicle classification), a built-in mic, and Smart IR night vision up to 50 m. It is IP67 outdoor-rated and powers over a single PoE cable or DC 12V, with a −30 °C to 60 °C working range.
Is this the right camera for you?
Plain-language guide for buyers and installers — based only on what this camera actually does.
Long driveways & fence linesThe 2.8–12 mm motorized zoom can be tuned remotely after mounting — narrow the view to reach further down a driveway without re-aiming the bracket.
Parking lots & vehicle gatesUltra motion detection tells people from vehicles, cutting false alerts from a busy lot down to the movement that actually matters.
Storefronts facing strong sunlight120 dB true WDR keeps both the bright doorway and the shaded interior visible in the same frame, instead of one washing out the other.
Warehouse & site perimetersIP67 body and −30 to 60 °C rating survive rain, dust and heat outdoors, day after day.
Shops & storefrontsThe built-in mic picks up what is said at the counter, and MicroSD edge storage keeps a local backup even where an NVR is also recording.
Quick retrofits & pole installsOne PoE cable does power + video — no electrician needed on site, quick to install and reframe later thanks to the motorized zoom.
Not the right pick if you need…
- Full-color night vision — this is IR-only, night video is black & white, not color
- Two-way talk — it has a built-in mic but no speaker
- Wi-Fi — this is a wired RJ45 camera
- A one-time fixed focal length choice at purchase — the zoom on this model is motorized and adjustable on site, not a pick-one-at-checkout fixed lens
- Vandal-resistant IK rating — this model's datasheet lists no IK protection rating (IP67 dust/water rating only)
- Alarm in/out wiring for sirens or sensors
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Key Features
Complete list from the official datasheet.
High quality image with 1080P, 1/2.7" CMOS sensor
1080P (1920 × 1080)@30/25 fps; 720P (1280 × 720)@30/25 fps
Ultra 265, H.265, H.264, MJPEG
2D/3D DNR (digital noise reduction)
Support ultra motion detection (human/vehicle detection)
ROI (region of interest) ensures image quality in areas of interest with low bandwidth
Smart IR, up to 50 m (164.0 ft.) IR distance
120 dB true WDR technology enables clear image in strong light scene
Built-in mic
Wide temperature range: −30 °C to 60 °C (−22 °F to 140 °F)
DC 12 V, PoE (IEEE 802.3af) power supply
IP67
Night Vision: Smart IR
Invisible infrared night vision — this model has no warm-light module.
IR MODE
Invisible infrared — discreet black & white night vision
Smart IR up to 50 m (164.0 ft.) at 850 nm. The camera watches without lighting up the scene — nothing shows it is recording. This model has a single IR illuminator only, no warm-light module.
How far can it see? (DORI)
DORI (EN 62676-4) is the industry standard for what a camera can do at distance. Because this model has a motorized 2.8–12 mm varifocal lens, each capability spans a range — from the widest zoom setting to full telephoto, not a single fixed number.
Detectsomething is there
WIDE (2.8mm)42.0 m137.8 ft
TELE (12mm)180 m590.6 ft
Observewhat is happening
WIDE (2.8mm)16.8 m55.1 ft
TELE (12mm)72.0 m236.2 ft
Recognizesomeone you know
WIDE (2.8mm)8.4 m27.6 ft
TELE (12mm)36 m118.1 ft
Identifya stranger's face
WIDE (2.8mm)4.2 m13.8 ft
TELE (12mm)18 m59.1 ft
How wide a view at each distance
Scene width covered at typical mounting distances — the number you need to work out how many cameras a wall, yard or aisle takes.
| Distance | 111.0° wide | 36.6° tele |
|---|---|---|
| 5 m16 ft | 14.6 m47.7 ft | 3.3 m10.9 ft |
| 10 m33 ft | 29.1 m95.5 ft | 6.6 m21.7 ft |
| 15 m49 ft | 43.7 m143 ft | 9.9 m32.6 ft |
| 20 m66 ft | 58.2 m191 ft | 13.2 m43.4 ft |
| 30 m98 ft | 87.3 m286 ft | 19.8 m65.1 ft |
Calculated from the horizontal field of view in the specifications below: width = 2 × distance × tan(FOV ÷ 2). Lens distortion and mounting angle are not included.
Who uses it, where it goes and how to install it
Written for the Uniarch IPC-B312-ADZK from its official datasheet: 2 MP, 2.8–12 mm motorized varifocal lens, 50 m Smart IR, 120 dB WDR, human-based intrusion and cross line, PoE at max. 9.6 W.
Who it is for
- Installers who do not know the final distance in advance — One model covers 111.0° down to 36.6°: zoom and frame the shot from the browser after mounting, instead of stocking 2.8, 4, 6 and 12 mm fixed versions.
- Car parks, yards and vehicle gates — At 12 mm it identifies a face up to 18 m; intrusion and cross line based on human body detection, plus Ultra motion detection for people and vehicles, keep alerts to real movement.
- Perimeters that must stay discreet at night — Invisible 850 nm Smart IR up to 50 m gives black-and-white night video without lighting up the area, unlike the warm-light IPC-B242-ADF28(40)K-WP.
- Shop fronts facing bright streets — 120 dB true WDR keeps a bright doorway and a darker interior readable in one frame; the built-in mic and MicroSD up to 512 GB add sound and a local backup.
Where and how to install
- Height and angle — Mount at about 2.5–3.5 m with a shallow downward tilt. When you zoom to the tele end, aim farther away rather than steeper down, or the frame shows the top of heads.
- Set the zoom from the browser — Fix the bracket roughly, then zoom and frame from the web interface or the Uniarch client while someone walks the target area. Check the image again after dark with the IR on before you leave the site.
- Keep IR from bouncing back — Do not mount tight under eaves or next to a wall, gutter or pole that sits inside the picture: the IR reflects back and turns the night image white. Keep branches and cobwebs away from the front glass.
- Weather, cable joint and surge — The body is IP67, but the RJ45 and 12 V tail is not: put it in the TR-JB05-A-IN junction box (wiring from behind) and seal the entry with the TR-A01-IN gland. Surge protection is 4 kV; on poles or long outdoor runs add a surge protector and earthing.
- Brackets — Pole: TR-UP06-B-IN, or TR-UP06-C-IN-V2 when the junction box is used; outside building corners: TR-UC08-C-V2. At 0.51 kg with a metal body, fix it to solid masonry or a firm pole so the zoomed-in picture does not shake in wind.
- Power and cable — It draws up to 9.6 W, much more than a fixed-lens camera, so check the PoE budget of the switch (IEEE 802.3af). Use Cat5e or Cat6 copper up to 100 m, or a 12 V DC adapter with a Ø5.5 mm plug.
2.8–12 mm motorized zoom: wide end or tele end
At the wide end it sees 111.0° and covers about 29.1 m of width at 10 m, but only about 66 pixels land on each meter there. Zoomed to 12 mm the view narrows to 36.6° (about 6.6 m wide at 10 m) and detail rises to about 290 px/m, so faces are identifiable to 18 m instead of 4.2 m. Simple rule from the DORI figures: the identify distance is about 1.5 m for every millimeter of focal length.
| Wide · 2.8 mm | Tele · 12 mm | |
|---|---|---|
| Horizontal view angle | 111.0° | 36.6° |
| Width covered at 5 m | 14.6 m | 3.3 m |
| Width covered at 10 m | 29.1 m | 6.6 m |
| Pixels per meter at 10 m | 66 px/m | 290 px/m |
| Identify a stranger's face up to | 4.2 m | 18 m |
| Recognize someone you know up to | 8.4 m | 36 m |
| Observe what is happening up to | 16.8 m | 72.0 m |
| Detect that something is there up to | 42.0 m | 180 m |
- Stay near the wide end for a yard, car park or shop floor seen from close: at 2.8 mm it covers 14.6 m of width from 5 m away.
- For faces at a gate, divide the distance by 1.5 to get the focal length: a gate 9 m away needs about 6 mm, one 15 m away about 10 mm.
- At night the IR reaches 50 m, so the tele-end observe and detect figures (72.0 m and 180 m) apply after dark only where there is other lighting.
Widths are calculated from the horizontal view angle (width = 2 × distance × tan(angle ÷ 2)); pixels per meter = horizontal pixels ÷ width at 10 m; face distances are the manufacturer's DORI figures at each end of the zoom. Settings between the two ends give values in between.
Full Specifications
Complete official specifications from the manufacturer's datasheet (technical values in English).
Camera
| Max Resolution | 2 MP |
| Sensor | 1/2.7" CMOS |
| Min. Illumination | Color: 0.005 Lux (F1.6, AGC ON), 0 Lux with IR on |
| Day/Night | IR-cut filter with auto switch (ICR) |
| Shutter | Auto/Manual, 1 to 1/100000 s |
| Adjustment Angle | Pan: 0° to 360°, Tilt: 0° to 90°, Rotate: 0° to 360° |
| S/N | > 52 dB |
| WDR | 120 dB |
Lens
| Focal Length | 2.8 to 12 mm |
| Iris | F1.6 |
| Field of View (H) | 111.0° to 36.6° |
| Field of View (V) | 59.4° to 20.6° |
| Field of View (D) | 130.0° to 42.0° |
DORI
| DORI Distance (Lens) | 2.8 to 12 mm |
| DORI Distance (Detect) | 42.0 m to 180 m (137.8 ft. to 590.6 ft.) |
| DORI Distance (Observe) | 16.8 m to 72.0 m (55.1 ft. to 236.2 ft.) |
| DORI Distance (Recognize) | 8.4 m to 36 m (27.6 ft. to 118.1 ft.) |
| DORI Distance (Identify) | 4.2 m to 18 m (13.8 ft. to 59.1 ft.) |
Illuminator
| Supplemental Light | IR |
| Illumination Distance (IR) | 50 m (164.0 ft.) |
| Wavelength | 850 nm |
| IR On/Off Control | Auto/Manual |
Video
| Video Compression | H.265, H.264, MJPEG, Ultra 265 |
| H.264 Code Profile | Baseline profile, Main profile, High profile |
| Frame Rate | Main Stream: 1080P (1920×1080), max. 30 fps; 720P (1280×720), max. 30 fps · Sub Stream: 720P (1280×720), max. 30 fps; D1 (720×576), max. 30 fps; 640×360, max. 30 fps; 2CIF (704×288), max. 30 fps; CIF (352×288), max. 30 fps |
| Video Bit Rate | 128 Kbps to 6144 Kbps |
| U-code | Support |
| OSD | Up to 4 OSDs |
| Privacy Mask | Up to 4 areas |
| ROI | Up to 8 areas |
| Video Stream | Dual streams |
Image
| White Balance | Auto, Outdoor, Fine tune, Sodium lamp, Locked, Auto2 |
| Smart IR | Support |
| Digital Noise Reduction | 2D/3D DNR |
| Flip | Normal, Flip vertical, Flip horizontal, 180°, 90° Clockwise, 90° Anti-clockwise |
| Dewarping | N/A |
| HLC | Support |
| BLC | Support |
| Defog | Digital defog |
Events
| Basic Detection | Motion detection, Tampering alarm, Audio detection, Cross line, Intrusion (based on human body detection), Ultra motion detection (human/vehicle detection) |
| General Function | Watermark, IP address filtering, Access policy, ARP protection, RTSP authentication, User authentication, HTTP authentication |
Audio
| Audio Compression | G.711U, G.711A |
| Audio Bitrate | 64 Kbps |
| Two-way Audio | N/A |
| Suppression | Support |
| Sampling Rate | 8 kHz |
Storage
| Edge Storage | MicroSD, up to 512 GB |
| Network Storage | ANR, NAS (NFS) |
Network
| Protocols | IPv4, IGMP, ICMP, ARP, TCP, UDP, DHCP, RTP, RTSP, RTCP, RTMP, DNS, DDNS, NTP, FTP, UPnP, HTTP, HTTPS, SMTP, SSL/TLS, QoS, SNMP, IPv6 |
| Compatible Integration | ONVIF (Profile S, Profile G, Profile T), API, SDK |
| User/Host | Up to 32 users. 3 user levels: administrator, common user and operator |
| Client | Uniarch client, Uniarch Care |
| Web Browser | Plug-in required live view: IE 10+, Chrome 45+, Firefox 52+, Edge 79+, Plug-in free live view: Chrome 57.0 and above, Firefox 58.0 and above, Edge 16 and above |
Interface
| Audio I/O | N/A |
| Alarm I/O | N/A |
| Built-in Mic | Support |
| Built-in Speaker | N/A |
| WIFI | N/A |
| Network | 1 × RJ45 10 M/100 M Base-TX Ethernet |
| Video Output | N/A |
Certification
| Protection | IP67 (IEC 60529) |
| EMC | CE-EMC (EN 55032, EN 61000-3-3, EN IEC 61000-3-2, EN 55035); FCC (FCC 47 CFR part15 B) |
| Safety | CE-LVD (EN 62368-1) |
| Environment | CE-RoHS (2011/65/EU; (EU) 2015/863); WEEE (2012/19/EU) |
General
| Power | DC 12 V±25%, PoE (IEEE 802.3af) |
| Power Consumption | Max. 9.6 W |
| Power Interface | Ø5.5 mm coaxial power plug |
| Dimensions | 197.4 mm × 73.0 mm × 72.9 mm (7.8" × 2.9" × 2.9") (L × W × H) |
| Weight | 0.51 kg (1.12 lb.) |
| Material | Metal + Plastic + Graphene |
| Working Environment | -30 °C to 60 °C (-22 °F to 140 °F), Humidity: ≤ 95% RH (non-condensing) |
| Storage Environment | -30 °C to 60 °C (-22 °F to 140 °F), Humidity: ≤ 95% RH (non-condensing) |
| Surge Protection | 4 KV |
| Reset Button | Support |
Dimensions
Engineering drawing reproduced 1:1 from the official datasheet.
unit: mm (in.)
| Dimensions | 197.4 mm × 73.0 mm × 72.9 mm (7.8" × 2.9" × 2.9") (L × W × H) |
| Weight | 0.51 kg (1.12 lb.) |
| Material | Metal + Plastic + Graphene |
| Mount adjustment | Pan 0–360° · Tilt 0–90° · Rotate 0–360° |
Optional Mounting Accessories
Order together with the camera to save shipping.
TR-JB05-A-INSmall bullet junction box (support wiring from behind, square)
TR-UP06-C-IN-V2Pole mounting bracket for bullet junction box only
TR-A01-INNPT 3/4" waterproof cable gland
TR-UC08-C-V2Bullet & dome corner mounting bracket
TR-UP06-B-INBullet pole mounting bracket
2MP Varifocal Bullet Camera FAQ — IPC-B312-ADZK
How far can the IPC-B312-ADZK see at night?
Smart IR at 850 nm reaches up to 50 m in total darkness — noticeably further than typical 30 m entry-level bullets — with auto or manual control. The IR is invisible, so the camera monitors discreetly, and Smart IR adjusts intensity to avoid washing out close subjects.
Can I adjust the zoom after installation?
Yes — the 2.8–12 mm varifocal lens is adjusted remotely, no ladder needed. At 2.8 mm you get a 111° wide view with DORI detect at 42 m; at 12 mm the view narrows to 36.6° but detect stretches to 180 m and identify to 18 m. One SKU covers many scene types.
What smart detections does it support besides motion?
Cross line and intrusion detection are both based on human body detection, so a fence line or zone alarm fires on people rather than dogs or blowing debris. Ultra motion detection, tampering alarm and audio detection round it out, and ROI supports up to 8 areas.
Can it record locally if the network drops?
Yes — it has MicroSD edge storage, so footage keeps writing to the card when the link to the NVR fails, and a built-in microphone records audio alongside. With Ultra 265/H.265 at 128–6144 Kbps you control how many days a card holds.
How is it powered and does it survive rain and backlight?
PoE runs power and 1080p/30 fps video over one network cable — practical on perimeter poles. The IP67 housing handles dust and heavy rain, while true 120 dB WDR keeps faces readable against gates, headlights and bright doorways, backed by HLC, BLC and digital defog.
How many IPC-B312-ADZK cameras can one PoE switch power?
Count on 9.6 W per camera, the datasheet maximum. A 60 W switch such as the Uniarch SW-2110-LP therefore runs 6 of them at full load (6 × 9.6 W = 57.6 W), not all 8 ports; the SW-2218-LP with 150 W covers all 16 ports with margin. Every port only needs IEEE 802.3af.
Can I zoom the IPC-B312-ADZK from a Hikvision, Dahua or other third-party NVR?
Live view and recording work on most third-party recorders through ONVIF Profile S, G and T or RTSP. Lens zoom control over ONVIF depends on the NVR brand and firmware, so plan to set the zoom once from the camera's web interface or the Uniarch client during installation; the setting stays in the camera. Intrusion and cross line events are fully managed on Uniarch/Uniview recorders. Tell us your NVR model and we will confirm before you order.
Should I buy the IPC-B312-ADZK or a cheaper fixed-lens bullet?
Choose a fixed 2.8 or 4.0 mm model such as the IPC-B122-APF28(40)K when the target is within about 6 m and you know the distance. Choose the IPC-B312-ADZK when the target is farther or uncertain: at 12 mm it identifies faces to 18 m, against 6.4 m for a 4.0 mm fixed lens. It also adds human-based intrusion and cross line, but draws up to 9.6 W against 3.2 W for the B122, which matters on small PoE switches.
Why does the IPC-B312-ADZK look sharp by day but darker or softer at night when zoomed in?
The IR reaches 50 m, so at night anything beyond that is lit only by street or site lighting, even though the tele end can detect up to 180 m by day. Infrared light also focuses slightly differently from daylight, so after zooming, check the picture after dark with the IR on and re-adjust the lens from the web interface if needed. Avoid walls or eaves inside the frame, which reflect IR and make the camera darken the rest of the image.
How long will a 512 GB MicroSD card record on the IPC-B312-ADZK?
At the 6144 Kbps maximum bit rate with continuous recording, about 7.7 days (about 66.4 GB per day). At 2048 Kbps, a common setting for 1080P with H.265, about 23 days. Recording only on intrusion, cross line or Ultra motion events, or using Ultra 265, stretches this further.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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