



Uho-S2-M3-A
3MP indoor Wi-Fi camera with a real motorized pan-tilt head — 338° pan, -5° to 55° tilt, Auto Tracking and two-way audio. No network cable, just power and connect over 2.4GHz Wi-Fi.
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 →The Uniarch Uho-S2-M3-A is a 3MP indoor Wi-Fi camera with a real motorized pan-tilt head, not just a fixed mount angle. It pans 338° and tilts from -5° to 55°, with Auto Tracking that follows moving subjects and 20 presets for jumping straight to a spot you check often. Built-in mic and speaker support two-way audio, and it detects humans, vehicles, pets and even crying, all over Wi-Fi with no network cable required.
Is this the right camera for you?
Plain-language guide for buyers and installers — based only on what this camera actually does.
- Outdoor or weatherproof installation — this is an indoor-only camera with no IP-rated enclosure
- PoE power — there's no PoE port, it runs on its own DC5V/1.5A Micro-USB adapter
- A wired network fallback — this model connects over Wi-Fi only, there is no Ethernet port
- Long-distance night vision — IR reaches 10m (33ft), built for room-scale distances, not yards
- On-screen privacy masking from the phone app — Privacy Mask only works when the camera is connected to an NVR
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Key Features
Complete list from the official datasheet.
Night vision: infrared only
Switchable Auto/Manual IR — set it per room.
Invisible infrared — discreet black & white night vision
IR night vision up to 10 m (32.8 ft.) at 850 nm, with Auto/Manual IR On/Off control. This model has a single IR illuminator only, no warm-light module.
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 | 67.3° |
|---|---|
| 5 m16 ft | 6.7 m21.8 ft |
| 10 m33 ft | 13.3 m43.7 ft |
| 15 m49 ft | 20.0 m65.5 ft |
| 20 m66 ft | 26.6 m87.4 ft |
| 30 m98 ft | 39.9 m131 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 to place it and how to set it up
Written for the Uho-S2-M3-A from its official datasheet: 3 MP indoor pan-tilt camera, fixed 4.0 mm lens (67.3°), 338° pan / -5° to 55° tilt with auto tracking, 10 m IR, crying and high-decibel detection, 2.4 GHz Wi-Fi only, 5 V Micro-USB power.
Who it is for
- Parents of babies and toddlers — Crying detection sends an alert, auto tracking follows a toddler who leaves the play mat, and the 850 nm IR watches the cot in the dark without a visible lamp.
- Families looking in on an elderly relative — High-decibel detection flags a shout or a crash, 20 presets jump to the bed, chair and door, and two-way audio lets you talk without them touching a phone.
- Pet owners — Ultra motion detection separates pets from people, so you can get alerts for the dog or cat while away, and talk to it through the speaker.
- Small rooms on a tight budget — A 67.3° lens on a 338° motor covers a bedroom, nursery or small office from one corner with a single USB plug and no network cable.
Where and how to place it
- Up high, or upside down on the ceiling — Tilt goes only 5° below level and 55° above, so on a table it looks across or up, not down. On a high shelf or wardrobe it sees the room; mounted upside down on the ceiling with the 180° image flip on, the 55° side points down at the floor and cot.
- Put the 22° blind gap on the wall — Pan is 0–338°, so 22° of the circle cannot be reached. In a corner or against a wall that gap is behind the camera anyway; in the middle of a room, point it at the least important side.
- Keep the USB cable out of reach — Power is DC 5 V / 1.5 A on Micro-USB, max. 7.5 W. Near a cot or where pets chew, run the cable along the wall or inside a cable channel, and keep the adapter where a child cannot pull it.
- 2.4 GHz Wi-Fi only, no network port — It uses 802.11b/g/n on 2.4 GHz with a 20 MHz channel and has no Ethernet port, so the room must have a usable 2.4 GHz signal. Check it with a phone at the chosen spot; if it is weak, move the router or add a mesh point rather than the camera.
- Indoors, away from heat and steam — It has no IP rating and works from -10 °C to 50 °C. Do not place it in a bathroom, over a stove, or on a sunny windowsill where direct sun heats the body; BLC helps when a bright window or doorway is behind the subject.
What the 4.0 mm lens sees in a room
The 67.3° lens is narrower than many fixed room cameras: about 4.0 m of wall at 3 m away and 6.7 m at 5 m. The motor makes up for it by turning the picture through 338°, and auto tracking keeps a moving person or pet inside that window.
| Uho-S2-M3-A · 4.0 mm | |
|---|---|
| Horizontal view angle | 67.3° |
| Width covered at 3 m | 4.0 m |
| Width covered at 5 m | 6.7 m |
| Pixels per meter at 5 m | ≈ 346 px/m |
| IR night vision | 10 m · 850 nm |
| Pan range | 0°–338° |
| Tilt range | -5° to 55° |
| Pan / tilt speed | 17–50°/s |
| Presets | 20 |
- In a room up to about 5 m deep, one corner position plus presets covers everything; at 5 m there are still about 346 pixels per meter, enough to recognize a family member.
- The IR reaches 10 m, more than most rooms need; a long open-plan space or hall is better served by the 4MP Uho-S2-M4, whose lens is wider at 79.0°.
Widths are calculated from the 67.3° horizontal view angle (width = 2 × distance × tan(angle ÷ 2)); pixels per meter = 2304 horizontal pixels ÷ width. The datasheet gives no DORI distances for this model. IR, pan/tilt and preset figures are from the official datasheet; the Uho-S2-M4 angle is from its own datasheet.
Full Specifications
Complete official specifications from the manufacturer's datasheet (technical values in English).
Camera
| Max Resolution | 3 MP |
| Sensor | 1/3.0" CMOS |
| Min. Illumination | Colour: 0.02 lux (F2.0, AGC ON), 0 lux with IR on |
| Day/Night | IR-cut filter with auto switch (ICR) |
| Shutter | Auto/Manual, 1/4 to 1/100000 s |
| S/N | > 52 dB |
| WDR | DWDR |
| Case Type | PT |
Lens
| Focal Length | 4.0 mm |
| Iris | F2.0 |
| Field of View (H) | 67.3° |
| Field of View (V) | 37.2° |
| Field of View (D) | 77.8° |
| Lens Type | Fixed |
| Iris Type | Fixed |
Illuminator
| Supplemental Light | IR |
| Illumination Distance (IR) | 10 m (32.8 ft.) |
| Wavelength | 850 nm |
| IR On/Off Control | Auto/Manual |
Video
| Video Compression | Ultra 265, H.265, H.264 |
| Frame Rate | Main Stream: 3MP (2304×1296), max. 25 fps; 2MP (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 2 OSDs |
| Privacy Mask | Support (only NVR) |
| ROI | Support |
| 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 | Support |
| Defog | Digital defog |
Events
| Basic Detection | Motion detection, Ultra motion detection (human/vehicle/pet), Crying detection, High-Decibel detection |
| General Function | IP address filtering, Access policy, ARP protection, RTSP authentication, User authentication, HTTP authentication |
Intelligent
| Auto Tracking | Support |
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 |
| 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 |
PTZ
| Pan Range | 0° ~ 338° |
| Pan Speed | 17°/s ~ 50°/s, Preset speed: 50°/s |
| Tilt Range | -5° ~ 55° |
| Tilt Speed | 17°/s ~ 50°/s, Preset speed: 50°/s |
| Number of Presets | 20 |
Interface
| Audio I/O | N/A |
| Alarm I/O | N/A |
| Built-in Mic | Support |
| Built-in Speaker | Support |
| WIFI | Support |
Certification
| 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 Consumption | Max. 7.5 W |
| Power | DC 5 V/1.5 A, Micro USB interface |
| LED Indicator | 1, red/blue |
| Dimensions | Φ80 mm × 120 mm (Ø3.1" × 4.8") |
| Weight | 0.18 kg (0.40 lb.) |
| Working Environment | -10 °C to 50 °C (14 °F to 122 °F), Humidity: ≤ 95% RH (non-condensing) |
| Storage Environment | -10 °C to 50 °C (14 °F to 122 °F), Humidity: ≤ 95% RH (non-condensing) |
| Reset Button | Support |
Other
| Software Version | DIPC-B6117 |
Dimensions
Engineering drawing reproduced 1:1 from the official datasheet.

| Dimensions | Φ80 × 120 mm (Ø3.1" × 4.8") |
| Weight | 0.18 kg (0.40 lb.) |
| Pan range | 0° – 338° |
| Tilt range | -5° – 55° |
3MP Indoor Wi-Fi Pan-Tilt Camera FAQ — Uho-S2-M3-A
How much of a room can the Uho-S2-M3-A cover?
Can it tell people and pets apart, and detect a baby crying?
How long can it record on a MicroSD card?
How does it perform at night indoors?
Can I talk to my family or staff through it?
Will the Uho-S2-M3-A connect to my dual-band or WPA3 router, and does it need to be in the same room?
Can the Uho-S2-M3-A watch my yard through a window at night?
How do I keep the Uho-S2-M3-A's video private and stop strangers getting in?
Can the Uho-S2-M3-A alert me if an elderly parent falls or shouts for help?
Can I keep the Uho-S2-M3-A running during a power cut with a USB power bank?
Do I need a cloud subscription to record?
Is the Uho-S2-M3-A suitable for a small shop, office or reception desk?
What power supply does the Uho-S2-M3-A need, and will a phone charger work?
What is the difference between the Uho-S2-M3-A and the Uho-S2E-M3-A?
Can the Uho-S2-M3-A connect to an NVR or be viewed on a computer?
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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