Product Overview
Wide-area monitoring across large commercial sites, perimeter boundaries and expansive outdoor environments calls for a camera that can cover distance and change direction on demand. The PTZ-N4225I-DE is a four-inch outdoor network speed dome built around a 25x optical zoom lens spanning 4.8mm to 120mm, giving operators the ability to close in on subjects across distances that fixed cameras simply cannot address. Featuring Powered-by-DarkFighter technology, it achieves colour imaging down to 0.005 Lux and zero-lux operation with 100m enhanced Smart IR, making it effective in low ambient light conditions typical of car parks and unmanned outdoor sites. Built with 360-degree endless pan and a tilt range of -15 to 90 degrees, it supports 300 presets and 8 patrol scan paths. It also integrates smart detection including intrusion, line crossing, region entrance and exit, unattended baggage and object removal detection. IP66 and TVS 4000V lightning protection make it suited to exposed outdoor installations year-round.
Key Capabilities
25x Optical Zoom
A focal range of 4.8mm to 120mm allows operators to shift from a wide 59.5-degree horizontal view down to a narrow 2.6-degree telephoto framing in approximately 3.6 seconds. This is essential for identifying subjects at distance across open yards, road approaches or large car parks.
Powered-by-DarkFighter Low-Light
The 1/2.5-inch progressive scan CMOS sensor achieves colour imaging at 0.005 Lux and monochrome at 0.001 Lux, supported by an F1.6 maximum aperture. Poorly lit perimeter areas, access roads and loading docks with minimal ambient lighting remain usable without relying entirely on IR illumination.
100m Enhanced Smart IR
Smart IR automatically adjusts infrared output intensity to prevent overexposure as subjects approach the camera. With a reach of 100m, it supports surveillance of long outdoor approaches, fence lines and driveways where subjects may be at varying distances from the camera.
Full PTZ Control with 300 Presets
360-degree endless pan and -15 to 90-degree tilt with speeds up to 80 degrees per second give operators rapid scene coverage. Up to 300 stored presets, 8 patrol paths and 4 pattern scans allow automated monitoring routines without requiring constant manual operation.
Smart Detection Events
Confirmed smart detection includes intrusion detection, line crossing, region entrance and exit, unattended baggage and object removal. These event types are useful for securing defined zones across large sites where continuous operator attention is not always possible.
120dB WDR and H.265+ Compression
120dB true wide dynamic range handles high-contrast scenes such as entry gates lit from behind or sun-exposed yard openings. H.265+ compression reduces storage and bandwidth demands compared to H.264, which matters when recording continuously from a PTZ camera over extended periods.
Best For
- Large Outdoor Sites Requiring Single-Camera Coverage: The 360-degree pan, 25x zoom and patrol scan capability allow one PTZ-N4225I-DE to monitor areas that would otherwise require multiple fixed cameras.
- Low-Light Perimeter Monitoring: Powered-by-DarkFighter with 0.005 Lux colour sensitivity and 100m Smart IR supports effective night-time surveillance along fence lines, access roads and open yards.
- Sites with Defined Security Zones: Intrusion detection, line crossing and region entrance and exit detection allow specific areas to trigger event-based recording and alerts without requiring continuous manual PTZ control.
- Exposed Outdoor Installations: IP66 water and dust resistance combined with TVS 4000V lightning protection and a working temperature range of -30 to 65 degrees Celsius makes this suited to sites with harsh or unpredictable weather.
Why Choose the PTZ-N4225I-DE
The PTZ-N4225I-DE occupies a practical position in the HiLook network speed dome range by combining genuine PTZ flexibility with a Powered-by-DarkFighter sensor that performs in low ambient light without requiring white-light supplementation. The 25x optical zoom reaching 120mm telephoto at F3.5 provides the reach needed for large property monitoring, while 300 presets and 8 configurable patrol paths mean the camera can operate on automated schedules rather than requiring a staffed control room. The 120dB WDR manages entry points and gates where light contrast is difficult, and the TVS 4000V surge and lightning protection is a genuine differentiator for exposed rooftop or pole-mounted installations. Local storage up to 256GB via microSD provides resilience if network recording is interrupted. Available at Security Wholesalers, the PTZ-N4225I-DE is supported by published datasheets, a quick-start guide and a full user manual for professional installation.
Buyer Decision Tips
Power Supply Requirement: The PTZ-N4225I-DE requires PoE+ (IEEE 802.3at, Class 4) drawing up to 18W at maximum IR load. Standard PoE (802.3af) switches will not deliver sufficient power. Confirm your NVR or PoE switch supports 802.3at on the port you intend to use, or plan for a 12VDC 2.0A local power supply at the camera location. This is one of the most common installation issues with PTZ speed domes in this power class.
Zoom Range vs. Resolution Trade-off: The PTZ-N4225I-DE records at up to 2560×1440 (approximately 4MP equivalent output, though marketed as a 2MP device at standard stream settings). At full telephoto the 2.6-degree horizontal field of view gives a tight frame on distant subjects, but detail extraction at maximum zoom depends on lighting conditions and scene contrast. For sites where forensic-quality zoom detail is the primary requirement rather than wide-area patrol coverage, assess whether this sensor size meets your specific identification distance requirements before purchasing.
Key Features & Technical Specifications
| Image Sensor |
1/2.5-inch progressive scan CMOS |
| Maximum Resolution |
2560 x 1440 |
| Focal Length |
4.8mm to 120mm, 25x optical zoom |
| Horizontal Field of View |
59.5 degrees (wide) to 2.6 degrees (tele) |
| Digital Zoom |
16x |
| Minimum Illumination |
Colour: 0.005 Lux (F1.6, AGC ON) / B/W: 0.001 Lux (F1.6, AGC ON) / 0 Lux with IR |
| WDR |
120dB true WDR |
| IR Distance |
100m enhanced IR with Smart IR |
| Pan Range / Speed |
360-degree endless / 0.1 to 80 degrees per second (preset speed 80 degrees per second) |
| Tilt Range / Speed |
-15 to 90 degrees (auto-flip) / 0.1 to 80 degrees per second |
| Presets |
300 presets |
| Patrol Scans |
8 patrols, up to 32 presets per patrol |
| Pattern Scans |
4 pattern scans, record time over 10 minutes per scan |
| Smart Detection |
Intrusion Detection, Line Crossing Detection, Region Entrance Detection, Region Exiting Detection, Unattended Baggage Detection, Object Removal Detection, Audio Exception Detection |
| Video Compression |
H.265+ / H.265 / H.264+ / H.264 / MJPEG |
| Local Storage |
MicroSD/SDHC/SDXC up to 256GB |
| Network Interface |
1x RJ45 10/100M Ethernet, PoE+ (802.3at, Class 4) |
| Power |
12VDC 2.0A or PoE+ 802.3at (42.5 to 57VDC), max. 18W (IR max. 6W) |
| Protection Level |
IP66, TVS 4000V lightning protection, surge and voltage transient protection |
| Operating Temperature |
-30 to 65 degrees Celsius |
Ideal Use Cases
Commercial Car Parks
360-degree endless pan and 25x optical zoom allow a single PTZ-N4225I-DE to sweep across multiple bays and close in on vehicle entry or exit points. Patrol scan paths can be configured to cycle through key areas automatically during unmanned periods.
Industrial Yards and Warehousing
Intrusion detection and line crossing events can be mapped to defined yard zones, triggering alerts when boundaries are breached outside business hours. The IP66 and TVS 4000V protection handles the dust, moisture and electrical conditions common at industrial locations.
Perimeter Fence Lines
With 100m Smart IR and a minimum illumination of 0.001 Lux in monochrome, the PTZ-N4225I-DE maintains usable imagery along dark perimeter runs. Region entrance and exit detection provide zone-specific event alerts along extended boundary lines.
School and Campus Grounds
Large open grounds benefit from PTZ coverage where the camera can be directed to incidents in real time from a control room. The 300-preset memory and power-off memory function ensure the camera returns to its configured positions after any power interruption.
Entry Gates and Access Roads
120dB WDR manages the strong backlight typical of vehicle entry points where headlights or direct sunlight create challenging contrast. The 25x zoom allows the camera to frame approaching vehicles or individuals from a single pole-mounted position at the gate.
Choosing the Right Model
- Choose this model if: You need a single camera to provide wide-area patrol coverage with long-range optical zoom, Powered-by-DarkFighter low-light performance and smart zone detection across a large outdoor site where running cable to multiple fixed cameras is impractical.
- Choose a different model if: Your installation requires only fixed-position coverage of a defined area – a fixed-lens or motorised varifocal camera will provide higher pixel density across that specific scene at lower cost and without the PoE+ power requirement. If your NVR or switch does not support 802.3at on the intended port, either upgrade your switching infrastructure or plan for a local 12VDC power supply before specifying this camera.
FAQs
- Does the PTZ-N4225I-DE require PoE+ or will standard PoE work?
This camera requires PoE+ (IEEE 802.3at, Class 4) and draws up to 18W at maximum load including IR. Standard PoE (802.3af) is limited to 15.4W and will not reliably power this unit. Use a PoE+ capable NVR port or a managed PoE+ switch, or supply 12VDC 2.0A locally at the camera.
- How many preset positions can the PTZ-N4225I-DE store and how are they used in patrols?
The camera supports up to 300 stored preset positions. These can be assigned into patrol paths, with up to 8 patrol scans each containing up to 32 presets per patrol. This allows complex automated sweep routines across large sites without requiring manual PTZ control during the patrol cycle.
- What happens to preset positions if the camera loses power?
The PTZ-N4225I-DE supports power-off memory, meaning stored presets, patrol configurations and the last active position are retained after a power interruption. When power is restored the camera returns to its saved state without requiring manual reconfiguration.
- What smart detection events does this camera support?
Confirmed smart detection includes intrusion detection, line crossing detection, region entrance detection, region exiting detection, unattended baggage detection, object removal detection and audio exception detection. Basic events include motion detection, video tampering detection and exception detection. All of these can be used to trigger recording or alerts via the connected NVR or VMS.
- Can the PTZ-N4225I-DE record locally without a network recorder?
Yes. The camera includes a built-in microSD slot supporting cards up to 256GB (MicroSD/SDHC/SDXC). It also supports ANR (Automatic Network Replenishment), which buffers footage locally to the card if the network connection to the NVR is interrupted and syncs it back once the connection is restored.
- How does the Powered-by-DarkFighter technology affect night-time performance compared to a standard IR camera?
Powered-by-DarkFighter refers to the enhanced low-light sensitivity of the 1/2.5-inch sensor combined with the F1.6 wide aperture lens. The camera achieves colour imaging at 0.005 Lux and monochrome at 0.001 Lux, which means in areas with low ambient light such as street lighting or moonlight it can produce usable colour or near-colour images before switching to full IR illumination. A standard sensor typically requires IR at much higher ambient light levels. The PTZ-N4225I-DE is part of the Security Wholesalers HiLook range and is supported by published datasheets for installer reference.
- What integration standards does the PTZ-N4225I-DE support for third-party VMS or recorders?
The camera supports ONVIF, ISAPI and CGI protocols, making it compatible with a wide range of third-party video management platforms. It also supports the Hikvision SDK and connects to iVMS-4200, iVMS-4500, iVMS-5200 and Hik-Connect clients. Up to 20 simultaneous live view channels and up to 32 user accounts across three access levels (Administrator, Operator and User) are supported.
Product Video Samples
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