IP Cameras › Uho-B2R-M2F3(4)
UniarchWi-Fi IR Bullet
2MP Wi-Fi IR Bullet
Uho-B2R-M2F3(4)
2MP fixed-lens Wi-Fi bullet camera — no network cable to the camera, just power and connect over 2.4GHz Wi-Fi. Two-way audio, IR night vision to 20m, IP67 outdoor body.
2 MP · 1080P@30fpsWi-Fi · 2.4GHz built-in antennaHuman Detection · fewer false alertsDC12V · adapter powerIP67 · outdoorTwo-Way Audio · mic + speaker
Choose your lens — two models on this page
M2F3 (2.8 mm, 95.5° view) covers a wide area near the camera — doorways, small yards, driveway entrances. M2F4 (4.0 mm, 81.1° view) trades width for reach — long driveways, fence lines, further gates. Highlighted rows in the spec table below show every difference.
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Lead time · In stock: at your forwarder’s China warehouse 3 days after payment · Not in stock: 7–15 working days · Then air 5–10 days / sea 25–45 days to your port
Terms · Sample orders welcome · Quotation / PI fixes models, prices, Incoterms (EXW or FOB, each quoted separately), lead time and T/T payment · Defective units: free spare units agreed per order (quantity depends on order size) and written into the quotation · Warranty: up to 5 years on Zhongxin Shutong industrial switches, manufacturer warranty on other brands · Full terms, warranty & RMA
Need the PDF datasheet? Get it on WhatsApp →Compliance:CEFCCRoHSWEEEIP67
Corporate orders are registered with the manufacturer under your company name — genuine supply you can verify at the source.
The Uniarch Uho-B2R-M2F3(4) is a 2MP Wi-Fi bullet camera built for sites where running a network cable isn't practical. It powers from a standard DC12V adapter and connects over built-in 2.4GHz Wi-Fi — no PoE switch or NVR cabling required, just a power outlet nearby. It combines human body detection, two-way audio (mic and speaker), Smart IR night vision up to 20m, and an IP67 metal-and-plastic body rated for −30°C to 60°C. It is offered with two fixed lenses: 2.8mm (M2F3, wider view) or 4.0mm (M2F4, longer reach).
Is this the right camera for you?
Plain-language guide for buyers and installers — based only on what this camera actually does.
Rentals & sites without spare network runsNo PoE switch or NVR cable run needed — plug into any nearby outlet and join the site Wi-Fi. Move it to a new spot without touching a cable.
Home gates & yardsHuman body detection focuses alerts on people approaching, and two-way audio lets you speak to a visitor directly from the app.
Warehouse & site perimetersIP67 body and −30 to 60 °C rating survive rain, dust and heat outdoors, day after day. M2F4 watches long fence lines.
Checking in from your phonePair it with the Uniarch APP for live view, push alerts and playback from anywhere — no NVR required for basic remote viewing.
Local backup you controlMicroSD edge storage up to 512GB keeps footage on the camera itself — no monthly cloud subscription required to have a recording.
Quick DIY installsNo electrician or cable-puller needed — mount, plug in, and connect to Wi-Fi from the app in a few minutes.
Not the right pick if you need…
- PoE power — this camera has no PoE port, it needs its own outlet with the included DC12V adapter
- Full-color night vision — this is IR-only, night video is black & white, not color
- Vehicle classification — detection here is human-body only, it does not tell people apart from vehicles
- A one-time fixed focal length choice at purchase — the lens is fixed (2.8 or 4.0 mm), chosen when you order, not zoomable on site
- Rock-solid connectivity regardless of Wi-Fi signal — performance depends on the strength of the site's 2.4GHz Wi-Fi signal at the mounting spot
Worried about counterfeits? Order under your own company name.
1 · Company name2 · Corporate bank payment3 · Order registered in your name4 · Verify SN on Uniview's site
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EXW / FOBDelivery to your forwarder's warehouseNo minimum order
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Key Features
Complete list from the official datasheet.
High quality image with 2MP, 1/3.0" CMOS sensor and F1.6 aperture lens
2MP (1920×1080)@30/25 fps; 720P (1280×720)@30/25 fps
Ultra 265, H.265, H.264, MJPEG
Built-in mic
Built-in speaker
Smart IR, up to 20m (66ft) IR distance
Supports 512 GB Micro SD card
Wi-Fi connection and easy installation
IP67 protection
3-Axis adjustment
Night vision: infrared only
Switchable Auto/Manual IR — set it per site.
IR MODE
Invisible infrared — discreet black & white night vision
Smart IR up to 20 m (66 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. Switch the lens buttons above to compare.
Detectsomething is there
46.7 m153.1 ft
Observewhat is happening
18.7 m61.2 ft
Recognizesomeone you know
9.3 m30.6 ft
Identifya stranger's face
4.7 m15.3 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 | F3 · 95.5° | F4 · 81.1° |
|---|---|---|
| 5 m16 ft | 11.0 m36.1 ft | 8.6 m28.1 ft |
| 10 m33 ft | 22.0 m72.2 ft | 17.1 m56.1 ft |
| 15 m49 ft | 33.0 m108 ft | 25.7 m84.2 ft |
| 20 m66 ft | 44.0 m144 ft | 34.2 m112 ft |
| 30 m98 ft | 66.1 m217 ft | 51.3 m168 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 Uho-B2R-M2F3(4) from its official datasheet: 2 MP at 30 fps, 2.8 mm or 4.0 mm F1.6 fixed lens, 2.4 GHz Wi-Fi, two-way audio, human body detection, 20 m Smart IR, DC 12 V at max. 5.6 W, IP67.
Who it is for
- Homes that want to answer the gate from the phone — Mic and speaker give two-way talk through the app, which the 2 MP Uho-B1R-M2F3(4)-A bullet does not have; human body detection focuses alerts on people approaching.
- Small shops, kiosks and offices — The F1.6 lens gives color down to 0.003 lux, so a shop front under street lighting stays in color longer before switching to IR, and up to 32 users let staff share access.
- Rentals and sites without spare network runs — Power from a 12 V DC adapter, Wi-Fi to the router and a microSD card of up to 512 GB in the camera: nothing else to install, and it can be moved to another outlet later.
Where and how to install
- Confirm the Wi-Fi signal before drilling — The antenna is built in, so the mounting spot decides the signal. Stand there with a phone on the same 2.4 GHz network and play a video; if it stutters, add a mesh node or extender, or use the RJ45 port with a cable.
- Height, distance and talk — Mount at about 2.5–3.5 m: high enough to resist tampering, low enough that a visitor can hear the speaker and the mic picks up their reply. Aim at the gate or door within 4.7 m (2.8 mm) or 6.7 m (4.0 mm) for an identifiable face.
- Night view: stay within 20 m — The IR reaches up to 20 m, shorter than the 30 m of the Uho-B1R-M2F3(4)-A, so keep the main night target within that range. Keep walls, eaves and gutters out of the frame or IR reflects back and washes out the image.
- Power and cable tail — 12 V DC ±25% (9–15 V) through a Ø5.5 mm plug, max. 5.6 W. Keep the adapter indoors or in a weatherproof box, and put the power and RJ45 tail in the TR-JB05-A-IN junction box or seal it with the TR-A01-IN cable gland.
- Brackets — Wall: directly or on TR-JB05-A-IN. Pole: TR-UP06-B-IN, or TR-UP06-C-IN-V2 together with the junction box. Corner: TR-UC08-C-V2. The 3-axis mount (pan 0–360°, tilt 0–90°, rotate 0–360°) also allows ceiling or eave mounting.
2.8 mm or 4.0 mm: what you actually see
Same 2 MP sensor, different fixed lens chosen at order time. The 4.0 mm sees about 1.4× farther and covers about 78% of the width. At 10 m it puts about 112 pixels on each meter of the scene versus about 87 for the 2.8 mm. Both share the same 20 m IR, so at night the extra reach of the 4.0 mm only helps up to that distance.
| M2F3 · 2.8 mm | M2F4 · 4.0 mm | |
|---|---|---|
| Horizontal view angle | 95.5° | 81.1° |
| Width covered at 5 m | 11.0 m | 8.6 m |
| Width covered at 10 m | 22.0 m | 17.1 m |
| Pixels per meter at 10 m | 87 | 112 |
| Identify a stranger's face up to | 4.7 m | 6.7 m |
| Recognize someone you know up to | 9.3 m | 13.3 m |
| Observe what is happening up to | 18.7 m | 26.7 m |
| Detect that something is there up to | 46.7 m | 66.7 m |
| IR night-vision distance | 20 m | 20 m |
- Pick 2.8 mm (M2F3) for a front door, porch or small shop where visitors stand close: from 5 m away it covers 11.0 m of width.
- Pick 4.0 mm (M2F4) for a gate 5–7 m from the wall: a face is identifiable at 6.7 m.
Widths are calculated from the horizontal view angle (width = 2 × distance × tan(angle ÷ 2)); pixels per meter = horizontal pixels ÷ width at 10 m; distances are the manufacturer's DORI figures from the official datasheet.
Full Specifications
Complete official specifications from the manufacturer's datasheet (technical values in English).
Highlighted rows differ between the two models:F3 = 2.8 mmF4 = 4.0 mm
Camera
| Max Resolution | 2 MP |
| Sensor | 1/3.0" CMOS |
| Min. Illumination | Colour: 0.003 lux (F1.6, AGC ON), 0 lux with IR on |
| Day/Night | IR-cut filter with auto switch (ICR) |
| Shutter | Auto/Manual, 1 ~ 1/100000 s |
| Adjustment Angle | Pan: 0° to 360°, Tilt: 0° to 90°, Rotate: 0° to 360° |
| S/N | > 52 dB |
| WDR | DWDR |
Lens
| Focal Length | F3 · 2.8 mmF4 · 4.0 mm |
| Iris Type | Fixed |
| Iris | F1.6 |
| Field of View (H) | F3 · 95.5°F4 · 81.1° |
| Field of View (V) | F3 · 53.1°F4 · 44.2° |
| Field of View (D) | F3 · 110.4°F4 · 94.7° |
DORI
| DORI Distance (Detect) | F3 · 46.7 m (153.1 ft.)F4 · 66.7 m (218.7 ft.) |
| DORI Distance (Observe) | F3 · 18.7 m (61.2 ft.)F4 · 26.7 m (87.5 ft.) |
| DORI Distance (Recognize) | F3 · 9.3 m (30.6 ft.)F4 · 13.3 m (43.7 ft.) |
| DORI Distance (Identify) | F3 · 4.7 m (15.3 ft.)F4 · 6.7 m (21.9 ft.) |
Illuminator
| Supplemental Light | IR |
| Illumination Distance (IR) | Up to 20 m (66 ft.) |
| Wavelength | 850 nm |
| IR On/Off Control | Auto/Manual |
Video
| Video Compression | Ultra 265, H.265, H.264 |
| 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: 640×360, max. 30 fps; 2CIF (704×288), max. 30 fps; CIF (352×288), max. 30 fps |
| Video Bit Rate | 128 Kbps to 2048 Kbps |
| U-code | Support |
| OSD | Up to 4 OSDs |
| Privacy Mask | Support (only NVR) |
| ROI | Up to 8 areas |
| Video Stream | Dual streams |
Image
| White Balance | Auto, Outdoor, Fine tune, Sodium lamp, Locked, Auto2 |
| Digital Noise Reduction | 2D/3D DNR |
| Smart IR | Support |
| Flip | Normal, Flip vertical, Flip horizontal, 180° |
| Dewarping | N/A |
| HLC | N/A |
| BLC | N/A |
| Defog | Digital defog |
Events
| Basic Detection | Human body detection, Motion detection, Audio detection |
| General Function | 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 | Support |
| Suppression | Support |
| Sampling Rate | 8 kHz |
Storage
| Edge Storage | MicroSD, up to 512 GB |
| Network Storage | ANR |
Network
| Wi-Fi | 2.4G Wi-Fi (IEEE802.11b/g/n), built-in antenna |
| Protocols | IPv4, TCP, UDP, DHCP, RTSP, DNS, DDNS, NTP, HTTP |
| Compatible Integration | API, SDK |
| User/Host | Up to 32 users. 2 user levels: administrator and common user |
| Client | APP, Uniarch client |
| Web Browser | Plug-in required live view: IE 10+, Chrome 45+, Firefox 52+, Edge 79+ |
Wi-Fi
| Wireless Standards | IEEE802.11b/g/n |
| Frequency Range | 2.4 GHz to 2.4835 GHz |
| Channel Bandwidth | 20 MHz Support |
| Modulation Mode | 802.11b: CCK, QPSK, BPSK; 802.11g/n: OFDM/HT |
| Wi-Fi Security | 64/128-bit WEP, WPA-PSK/WPA2-PSK |
| Transmit Power | 802.11b: 17±1.5 dBm@11 Mbps; 802.11g: 14±1.5 dBm@54 Mbps; 802.11n: 12.5±1.5 dBm@150 Mbps |
| Receive Sensitivity | 802.11b: -90 dBm@11 Mbps (Typical); 802.11g: -75 dBm@54 Mbps (Typical); 802.11n: -74 dBm@150 Mbps (Typical) |
| Transmission Rate | 802.11b: 11 Mbps; 802.11g: 54 Mbps; 802.11n: up to 150 Mbps |
Interface
| Audio I/O | N/A |
| Alarm I/O | N/A |
| Built-in Mic | Support |
| Built-in Speaker | Support |
| WIFI | Support |
| 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) |
| RF | FCC ID (FCC CFR 47 part15 C); CE RED (EN 301 489-1, EN 301 489-17, EN 300 328, EN 62311) |
| 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% |
| Power Consumption | Max. 5.6 W |
| Power Interface | Ø5.5 mm coaxial power plug |
| Material | Metal + Plastic |
| Dimensions | 148 × 78 × 78 mm (5.8" × 3.1" × 3.1") (L × W × H) |
| Weight | 0.31 kg (0.68 lb.) |
| 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 |
| LED Indicator | 1, red/blue |
Dimensions
Engineering drawing reproduced 1:1 from the official datasheet.
unit: mm (in.)
| Dimensions | 148 × 78 × 78 mm (5.8" × 3.1" × 3.1") |
| Weight | 0.31 kg (0.68 lb.) |
| Material | Metal + Plastic |
| 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-B-INBullet pole mounting bracket
TR-A01-INNPT 3/4" waterproof cable gland
TR-UP06-C-IN-V2Pole mounting bracket for bullet junction box only
TR-UC08-C-V2Bullet & dome corner mounting bracket
TR-SM05-INSwitch box adapter for fixed dome
2MP Two-Way Audio Wi-Fi Camera FAQ — Uho-B2R-M2F3(4)
How is it installed if there is no network cabling on site?
That is exactly what it is built for: it joins your Wi-Fi network and takes power from a nearby outlet, so no PoE switch and no LAN pull. Mount the IP67-rated bullet on a wall or eave, connect power, pair it with your network and it is running.
Can I talk to whoever is in front of the camera?
Yes. Two-way audio is supported with G.711U/A compression at 64 Kbps and echo suppression, so conversations stay intelligible. You can receive a delivery, answer a customer at the gate or verbally warn off an intruder without going outside.
What is the night vision range?
Smart IR reaches up to 20 m (66 ft) at 850 nm — invisible to the eye, so the camera watches without lighting up the scene. The F1.6 lens holds color down to 0.003 lux, and with IR on it records at 0 lux; ICR switching is automatic.
Should I take the 2.8 mm or the 4.0 mm lens version?
The 2.8 mm covers 95.5° horizontally with DORI detection at 46.7 m and identification at 4.7 m — pick it for rooms, small yards and wide entrances. The 4.0 mm narrows to 81.1° but reaches 66.7 m detection and 6.7 m identification — pick it for corridors and driveways.
What detections does it run, and where is video stored?
It runs human body detection, motion detection and audio detection, so alerts focus on people rather than every moving shadow. The main stream records 1080p at up to 30 fps in Ultra 265/H.265/H.264 (128–2048 Kbps), saved to a MicroSD card in the camera.
How far from my router can the Uho-B2R-M2F3(4) be installed?
There is no fixed distance; walls and interference matter more than metres. The camera uses 2.4 GHz 802.11b/g/n with a built-in antenna and needs at most 2048 Kbps for its main stream, so test at the spot with a phone on the same network: smooth video there usually means a stable camera. Through concrete walls, metal doors or roller shutters, add a mesh node or extender, or connect the RJ45 port with a cable.
Why does the Uho-B2R-M2F3(4) still send alerts for passing cars, and how do I reduce them?
Its smart detection is human body only; it has no vehicle class, and plain motion detection reacts to cars, headlights and moving shadows. Use human body detection for phone alerts, draw the detection area over your gate or path and leave the street out, and lower sensitivity step by step. If you need separate person and vehicle alerts, the Uho-B1R-M2F3(4)-A has ultra motion detection with human/vehicle classes.
Will the Uho-B2R-M2F3(4) connect to a WPA3 router, and how is access protected?
WPA3 is not listed; the datasheet gives 64/128-bit WEP and WPA-PSK/WPA2-PSK. Set the 2.4 GHz network to WPA2-PSK or WPA2/WPA3 mixed mode, and avoid WEP. The camera also supports user, HTTP and RTSP authentication, IP address filtering, access policy and ARP protection; change the default password at setup and keep the firmware updated.
Can my family and staff each have their own login on the Uho-B2R-M2F3(4)?
Yes. It supports up to 32 users with 2 levels, administrator and common user, viewed through the Uniarch app or the Uniarch client. Keep the administrator account for the owner and give everyone else common-user access, so they can watch, receive alerts and talk through the speaker without changing settings, and anyone's access can be removed without resetting the camera.
What happens to the Uho-B2R-M2F3(4) during a power cut?
It stops: there is no battery, and it runs only from its 12 V DC adapter. Footage already on the microSD card is kept, and when power returns the camera restarts and rejoins the Wi-Fi on its own once the router is back. Where outages are frequent, put the router and the camera adapter on a small UPS sized for the camera's maximum of 5.6 W plus the router.
Is the Uho-B2R-M2F3(4) suitable for very hot, wet or coastal sites?
Within its ratings, yes: IP67, −30 °C to 60 °C and up to 95% humidity, non-condensing. In practice the body is rarely the weak point; the cable tail and adapter are. Seal the power and RJ45 joint in a junction box, keep the adapter out of the rain, and avoid full afternoon sun on a dark wall. Near the sea, rinse salt deposits off the front glass during maintenance, and remember the speaker and mic openings should not face straight into driving rain.
Do I need a cloud subscription to record?
No. Recording to the on-board microSD card works without any subscription. If you want to record to your own NVR or server, check the protocols listed in the specification table (RTSP / ONVIF) or send us the name of your recording software and we will confirm compatibility before you order.
How many days of recording does a microSD card hold in the Uho-B2R-M2F3(4)?
At the maximum main-stream bitrate of 2048 Kbps with 24/7 continuous recording, the Uho-B2R-M2F3(4) writes about 22.1 GB per day (2.048 Mbps × 86,400 s ÷ 8). That gives roughly 5.8 days on a 128 GB card, 11.6 days on 256 GB and 23.1 days on the maximum 512 GB card. Lowering the bitrate (the range starts at 128 Kbps) or recording only on events extends these figures proportionally.
Is the Uho-B2R-M2F3(4) suitable for identifying faces at a driveway gate?
Yes, if the gate is close enough: the DORI Identify distance is 4.7 m for the 2.8 mm (F3) version and 6.7 m for the 4.0 mm (F4) version. Beyond that it still recognizes a known person up to 9.3 m (F3) or 13.3 m (F4) and detects movement up to 46.7 m (F3) or 66.7 m (F4). For a gate 5–6 m from the camera, choose the F4; at night the IR reaches up to 20 m.
What is the difference between the Uho-B2R-M2F3(4) and the Uho-B1R-M2F3(4)-A?
Both are 2MP Wi-Fi bullet cameras offered with 2.8 mm or 4.0 mm lenses. The Uho-B2R-M2F3(4) has a built-in mic and speaker for two-way audio and IR up to 20 m, while the Uho-B1R-M2F3(4)-A is listed with a longer 30 m IR range. Pick the B2R if talking to visitors matters; pick the B1R-A if longer night-vision reach is the priority.
Can the Uho-B2R-M2F3(4) be added to an NVR or third-party software?
Yes: the Uho-B2R-M2F3(4) supports RTSP (with RTSP authentication), offers API and SDK integration, and supports ANR network storage for filling recording gaps. Some functions, such as privacy masking, work only through an NVR. ONVIF is not listed in the specification, so confirm compatibility before mixing it with another brand's NVR; day-to-day viewing is through the APP or the Uniarch client.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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