3MP resolutions Human detection Connect the camera via WiFi P/T range at 360° horizontally and 90° vertically

Size and Weight: The body size of mainstream products is concentrated at 80×120×60mm (length × height × thickness), and the weight is controlled at 200-350g. For example, the Xiaomi Smart Camera 2 AI Enhanced Edition has a body size of 85×118×58mm and a weight of 280g. The lightweight design reduces wall load-bearing requirements. Industrial-grade models such as Hikvision DS-2CD3T46WDV3-L, due to their built-in metal heat dissipation structure, can weigh over 500g and require supporting expansion screws for fixation.

Installation Adjustment Range: The lens supports horizontal ±35° rotation and vertical -15° to +75° adjustment. Some high-end models such as the EZVIZ C5HC wireless version are equipped with a universal joint bracket, achieving 360° horizontal rotation and 90° vertical flipping, which can accurately cover key areas such as doors, windows, and passages. The recommended installation height is 2.5-3.5 meters, and the pitch angle is adjusted to ensure the center of the field of view is aligned with the monitoring focus.

Installation Accessories: Standard accessories include expansion screws, wall-mounted brackets, and a level. Some household models offer optional 3M adhesive stickers, supporting hole-free installation (suitable for smooth walls such as tiles and glass). Commercial models such as Dahua DH-IPC-HFW1230M-I2 come with a waterproof junction box for convenient hiding of outdoor cables.

Dust and Water Resistance: Indoor models usually reach IP54 protection (dustproof + splash-proof), such as the 360 Smart Camera 8Max; outdoor models need to meet IP66/IP67 standards. IP66 can resist high-pressure water spraying (such as heavy rain ), and IP67 supports short-term immersion (30 minutes in 1-meter deep water). For example, Hikvision DS-2CD3346WD-I adopts a double protection of sealing ring + waterproof rubber pad, adapting to open-air environments.

Material Technology: Indoor models mostly use ABS engineering plastics with a matte surface treatment to reduce reflection; outdoor models use aluminum alloy shells + tempered glass lens covers, with UV aging resistance. For example, the EZVIZ C5S shell has passed a 1000-hour salt spray test, and its corrosion resistance meets the needs of coastal areas.

Heat Dissipation Design: High-load models have built-in heat dissipation fins and silent fans, with an operating temperature range of -30°C to 60°C. For example, the metal body of the Axis M3045-V, combined with a convection heat dissipation structure, can still operate stably in high-temperature environments.

Focal Length and Field of View: The mainstream configuration is a 2.8mm focal length (field of view 110°-130°), suitable for monitoring in the 10-15m range (such as living rooms, shop halls); a 4mm focal length (field of view 85°-95°) is suitable for medium-distance monitoring (such as corridors, workshop passages); a 6mm focal length (field of view 55°-65°) is used for close-ups of key areas (such as cash registers, shelves). Some models support digital zoom (4x/8x). For example, the Xiaomi CW400 combines a 2.8mm lens with 8x digital zoom to balance wide-angle coverage and detail magnification.

Aperture and Light Transmittance: The F1.6 large aperture (50% more light intake than F2.0) has become a standard feature of mid-to-high-end models. For example, the F1.6 aperture of Hikvision DS-2CD3347WD-LU, combined with 7 groups of 10 optical lenses, maintains pure image quality in low-light environments. Entry-level models mostly use F2.0 apertures, suitable for well-lit indoor scenes.

Distortion Control: Aspherical lenses are used to correct wide-angle distortion, with a distortion rate of ≤1% (central area) and edge distortion of ≤5%, avoiding stretching and deformation of objects at the edge of the picture and ensuring the true proportion of the monitoring picture.

Resolution: 2K (2560×1440) is currently mainstream, with 3 million pixels, which is 77% higher in pixel density than 1080P (1920×1080), presenting clearer details (such as facial contours, item textures). High-end models such as Dahua DH-IPC-HFW2433DM-I1 support 4K (3840×2160) resolution with 8 million pixels, suitable for scenarios requiring fine recognition (such as commodity barcode reading).

Sensor Size: 1/2.7-inch CMOS is the basic configuration. The 1/1.8-inch large sensor (such as Xiaomi Smart Camera 2S) increases light intake by 40% and has better low-light performance. Starlight-level sensors (0.001Lux@F1.6) can output color images in moonlight environments, avoiding the loss of details in black-and-white imaging in infrared mode.

Wide Dynamic Range: Digital Wide Dynamic Range (WDR) technology supports a 120dB dynamic range, suppressing overexposure in strong light areas and enhancing details in dark areas through multi-frame synthesis. For example, in backlit scenes (monitoring indoors by the window), it can clearly see people outside the window while retaining indoor environmental details. High-end models adopt HDR+WDR dual algorithms, expanding the dynamic range to 140dB.

Infrared Supplementary Light: 850nm infrared LEDs are standard, with a supplementary light distance of 10-30 meters, using a dot-matrix layout (such as 4/8 LEDs) to avoid direct light spots. Some models such as the 360 Camera 8C Pro are equipped with intelligent infrared adjustment, automatically switching the supplementary light intensity according to distance to prevent overexposure of nearby objects.

Full-Color Night Vision: Full-color imaging in 0Lux environments is achieved through white light supplementary light (2000K warm white light), with a supplementary light distance of 5-15 meters, supporting intelligent switching (automatically turning on when light is below 10Lux), suitable for scenarios requiring color recognition (such as clothing color, vehicle color).

Night Vision Mode Switching: Supports automatic/manual/timed three night vision modes. Some models are equipped with infrared cut filter switching (ICR), switching to color mode during the day and infrared mode at night to ensure optimal image quality at all times.

WiFi Standard: Mainstream models support IEEE 802.11 b/g/n/ac (WiFi 5), with dual bands (2.4GHz+5GHz) ensuring connection stability. The 2.4GHz band has strong penetration (long coverage distance), and the 5GHz band has less interference (high transmission rate). For example, the EZVIZ C6CN wireless version has a theoretical rate of up to 867Mbps in the 5GHz band, supporting smooth 4K video transmission. High-end models such as Xiaomi AI Camera 2 Ultra already support WiFi 6 (802.11ax), with a 3x increase in concurrent throughput, suitable for multi-device networking environments.

Antenna Design: Built-in 2dBi/5dBi omnidirectional antennas, some models adopt dual-antenna MIMO technology (2×2), enhancing signal anti-interference ability through spatial diversity reception, increasing signal strength by 20% in wall-blocked scenarios. Detachable antenna models (such as Hikvision DS-2CD3145FWD-I) support replacing with high-gain antennas (8dBi) to expand coverage distance.

Connection Stability: Supports WiFi signal strength detection (APP displays RSSI value in real-time, -50dBm to -90dBm is the effective range), with an automatic reconnection mechanism (attempts to reconnect within 10 seconds after disconnection). Some models support seamless roaming (with the same brand router), ensuring no in mobile monitoring pictures.

Wired Backup: Some commercial models are equipped with an RJ45 network port (10/100Mbps), supporting PoE power supply (IEEE 802.3af standard), realizing data transmission and power supply through a single network cable, suitable for outdoor scenarios without power supply (such as wall monitoring). For example, Hikvision DS-2CD3346WDV3-I supports PoE + power supply (30W) and can be connected to external pickups, alarms, and other devices.

Interface Expansion: Reserved Micro USB power port (5V/2A), TF card slot (maximum support 512GB/1TB). Some models have audio interfaces (3.5mm), alarm input and output interfaces (dry contacts), which can be connected to door magnets, smoke sensors, and other sensors to build a linkage alarm system.

Video Encoding: Adopts H.265 + encoding technology, which is 50% more efficient in compression than H.264, and can transmit higher image quality under the same bandwidth (such as 2K video bandwidth requirement reduced to 2-4Mbps). Supports variable bit rate (VBR) and constant bit rate (CBR) adjustment to adapt to different network environments (choose VBR when bandwidth fluctuates greatly).

Protocol Support: Compatible with ONVIF (Profile S/G), RTSP, GB/T 28181 and other protocols, and can be connected to third-party NVRs and platforms (such as Dahua, Hikvision recorders). Supports UPnP and DDNS for convenient remote access configuration (no need for manual port mapping).

Multi-Platform Adaptation: Supports Android/iOS APP, Web client, and mini-program multi-terminal access. Some models support Alexa and Google Assistant voice control to realize smart home linkage (such as "display living room camera ").

Human Detection: Based on deep learning-based human contour recognition, it supports filtering interference such as pets, light shadows, and shaking leaves, with a false alarm rate of less than 0.5 times/day (in standard environments). Detection sensitivity can be set (high/medium/low); high sensitivity is suitable for open areas, and low sensitivity is suitable for complex environments.

Regional Intrusion Alarm: Supports custom warning areas (up to 4 polygonal areas). When a target enters/leaves the area, an alarm is triggered, and an alarm delay (5-30 seconds) can be set to avoid false alarms from short-passing objects (such as flying birds, passing pedestrians).

Abnormal Behavior Recognition: High-end models have lingering detection (alarm when staying for more than 10-60 seconds), line-crossing detection (crossing virtual defense lines), and item left/removed detection, suitable for shop anti-theft (such as detecting suspicious persons lingering) and warehouse supervision (such as abnormal movement of items).

Alarm Methods: Supports sound and light alarms (built-in 105dB buzzer + LED flashing), APP push (message/phone reminder), and email alarms. Alarm periods (such as only enabled at night) and alarm intervals (to avoid repeated pushes) can be set.

Two-Way Voice: Built-in microphone (sound pickup distance 5-10 meters, noise reduction level adjustable) and speaker (output power 3W), supporting real-time intercom (delay ≤300ms), suitable for remote communication (such as shop reception, family interaction).

Device Linkage: Link with other devices through smart home platforms (such as Mijia, Apple HomeKit), such as automatically turning on lights when a human figure is detected, triggering door lock alarms, and supporting IFTTT rule setting (such as "camera detects movement → send email and turn on spotlight").

Motion Tracking: When a moving object is detected, the pan-tilt rotates to automatically track the target (horizontal direction) to ensure the target is always in the center of the picture. The tracking speed can be adjusted (30°/s-60°/s), suitable for monitoring walking persons and vehicles.

Event Recording: Supports intelligent recording mode (only records 10-30 seconds of video before and after the alarm event), saving storage space (70% space saved compared to all-day recording). Key events (human figure/movement/sound) can be marked for convenient quick retrieval and playback.

Face Recognition: High-end models support local face recognition (up to 100 face databases), can set stranger alarms and ，with a recognition accuracy of ≥95% (frontal face, sufficient light), suitable for family visitor recognition and employee attendance assistance.

Local Storage: Micro SD cards support Class 10 and above high-speed cards, with a maximum capacity of 1TB (such as Samsung EVO Plus 1TB), cyclic recording (overwriting the earliest video), and recording duration can be set (1-30 days cycle). Supports manual recording, scheduled recording, and alarm recording three modes to meet different needs.

Cloud Storage Service: Manufacturers provide free/paid cloud storage. The free version usually supports 7-day event recording (only alarm clips), and the paid version provides 30-day/90-day all-day recording, using bank-level encryption (AES-256) for transmission and storage to prevent data leakage. Supports cloud video playback, download, and sharing (temporary authorized access).

NAS Storage: Supports SMB/NFS protocol to access network storage, realizing local private cloud backup of videos, suitable for scenarios with high data privacy requirements (such as enterprises, sensitive areas). It can set dual backup of NAS storage and local storage to ensure data is not lost.

Encryption Mechanism: Video transmission uses SSL/TLS encryption, local storage supports SD card encryption (password access required). Some models have physical privacy shielding (lens automatically rotates to shield), supporting remote opening/closing to protect privacy during sensitive periods (such as family rest time).

Permission Management: Supports multi-user access (up to 20 accounts), and different permissions (view/control/manage) can be assigned to avoid permission abuse. Supports operation log recording (login/recording/alarm and other operations) for traceability of abnormal access.

Firmware Security: Vulnerabilities are fixed through regular firmware upgrades, supporting OTA automatic upgrades (needs to be enabled). Some models have intrusion detection (brute force crack protection, abnormal connection alarm) to ensure the device is not maliciously controlled.

Operating Temperature: Indoor models are usually 0°C-40°C, and outdoor models have a wide temperature design (-30°C-60°C), adopting low-temperature start protection (automatic preheating below -10°C) and high-temperature heat dissipation (fan starts above 50°C) to ensure normal operation in extreme weather.

Humidity Adaptation: Supports 10%-90% RH non-condensing humidity environment, preventing short circuits caused by moisture through moisture-proof treatment (PCB board coated with three-proof paint), suitable for humid scenes such as southern plum rain season and bathrooms.

Anti-Interference Ability: With 3C certification, electromagnetic compatibility (EMC) meets Class B standards to avoid interfering with other household appliances; lightning protection level reaches IEC 61000-4-5 (4kV contact discharge, 8kV air discharge), suitable for thunderstorm-prone areas.

Two-Way Voice Quality: Adopts echo cancellation (AEC) and noise suppression (NS) technologies, with call clarity meeting ITU-T G.711 standards, supporting volume adjustment (1-10 levels), and no noise in long-distance sound pickup.

Picture Adjustment Function: Supports manual adjustment of brightness, contrast, saturation, and sharpness. Some models have backlight compensation (BLC) and (HLC) to optimize image quality in complex light scenes (such as backlight, strong light ).

Multi-Scene Modes: Preset scene modes such as home, shop, and office, automatically optimizing parameters (such as shop mode enhancing motion detection sensitivity, home mode reducing nighttime supplementary light intensity) to simplify user settings.

Home Scenario: Image quality (2K and above) > Night vision capability (full-color first) > AI human detection > Privacy function

Shop Scenario: Protection level (IP66 and above) > Wide dynamic range > Sound and light alarm > Storage capacity

Outdoor Scenario: Power supply mode (PoE first) > Temperature range > Infrared distance > Network stability

Be wary of "false 4K": Some models improve resolution through interpolation. It is necessary to confirm the native pixels of the sensor (4K requires 8 million native pixels)

Pay attention to cloud storage costs: Free cloud storage usually has many restrictions (only event recording). For long-term use, calculate the annual fee cost (usually 100-300 yuan/year)

Check WiFi compatibility: Old routers only support 2.4GHz, and single-band models should be selected; new routers prefer dual-band WiFi 5/6 models