ACTi B915-K1 vs Digital Watchdog DWC-XPZA03Mi: Specification Comparison
Both the ACTi B915-K1 and Digital Watchdog DWC-XPZA03Mi are 3MP outdoor PTZ cameras designed for wide-area perimeter surveillance, making them direct cross-shop candidates for installers evaluating long-range pan-tilt-zoom platforms. This comparison examines how their imaging hardware, environmental ratings, power requirements, and VMS integration capabilities differ—drawing strictly from published specifications—so integrators and IT buyers can match each unit to actual site and system requirements.
In This Guide
How do the imaging specs compare?
The ACTi B915-K1 uses a 1/2.8" sensor delivering 3MP at 2048×1536 (also 1920×1080), with a 4.6–165.6mm lens providing 36× optical zoom. Minimum illumination is 0.003 lux in color and 0 lux in B/W with IR on; IR range is rated at 150m. WDR is specified at 145dB. Maximum frame rate is 30fps at 3MP. The Digital Watchdog DWC-XPZA03Mi uses a larger 1/1.8" sensor at 2304×1296 (3MP), with a 6.5–260mm lens providing 40× optical zoom plus 16× digital zoom. Minimum color illumination is 0.005 lux; 0.0 lux in B/W mode. IR range is rated at 350m (1,148 ft) via Smart IR. WDR is listed as 'True WDR' with no dB figure specified. Maximum stream speed is listed at 60fps at 2304×1296.
On raw sensor size the DWC-XPZA03Mi holds an advantage with its 1/1.8" chip versus the B915-K1's 1/2.8", which typically correlates with better light-gathering capability—though the B915-K1's published color lux floor of 0.003 lux is marginally lower than the DWC-XPZA03Mi's 0.005 lux. The DWC-XPZA03Mi's 350m IR range is more than double the B915-K1's 150m, a significant delta for large perimeter applications. The B915-K1 publishes a quantified WDR figure of 145dB; Digital Watchdog specifies 'True WDR' without a decibel value, so a direct dB comparison cannot be made from available specs. The DWC-XPZA03Mi also adds Digital Image Stabilization (DIS) and de-fog, neither of which is listed for the B915-K1.
What about installation and environment?
Both cameras share IP66 and IK10 ratings, making them equivalent on weatherproofing and vandal resistance. The ACTi B915-K1 adds NEMA 4X certification (per NEMA 250-2014) and a published chassis corrosion-resistance life of approximately 10 years at seashore environments—neither of which appears in the DWC-XPZA03Mi spec sheet. Operating temperature for the B915-K1 is −40°C to 55°C (−40°F to 131°F); the DWC-XPZA03Mi operates across −30°C to 60°C (−22°F to 140°F). The B915-K1 therefore tolerates colder environments while the DWC-XPZA03Mi supports slightly higher heat. The DWC-XPZA03Mi is constructed from aluminum die-casting and weighs 12.72 lbs (5.77 kg); the B915-K1 dimensions are 170mm × 260mm (Ø × H) with no weight listed in the provided specs.
Both cameras require 75W High PoE for full operation. The B915-K1 also accepts AC 24V as an alternative power source; no AC input alternative is specified for the DWC-XPZA03Mi, which ships with a High PoE injector included. The B915-K1 supports Wall, Pole, Pendant, and Corner mounts; the DWC-XPZA03Mi notes that mounting accessories are required and sold separately, with no mount types enumerated in the provided specs. The DWC-XPZA03Mi includes 2 alarm outputs and 4 alarm inputs plus RS485 camera control; the B915-K1 specs provided do not enumerate alarm I/O count or RS485.
Which fits your VMS and analytics better?
The ACTi B915-K1 declares ONVIF Profile S, G, T, and M conformance, as well as VISCA, Pelco-D, and Pelco-P protocol support, providing broad compatibility with legacy PTZ control systems and modern VMS platforms simultaneously. The DWC-XPZA03Mi lists ONVIF conformance without specifying which profiles, and adds WS-Discovery and Zeroconf/AutoIP for network-level discoverability. The DWC-XPZA03Mi supports a richer protocol stack (RTMP, SRT, MPEG-TS, SNMP, IGMP among others) and offers quad-stream plus three secondary streams, versus a single RJ-45 port noted for the B915-K1 without a specified stream count in the provided specs.
On analytics, the B915-K1 lists VMD and People Counting as edge analytics. The DWC-XPZA03Mi includes AI auto-tracking and motion detection but does not list People Counting in the provided specs. Both cameras support two-way audio with one audio input and one output; the B915-K1 specifies line-in/line-out while the DWC-XPZA03Mi specifies G.711 audio compression. On-board storage (SD card) is not specified in either product's provided spec data. The DWC-XPZA03Mi supports 500 presets, 8 pattern runs, and 8 swing tours; the B915-K1 does not enumerate preset or pattern counts in the provided specs.
Which should you choose: the B915-K1 or the DWC-XPZA03Mi?
Our take: The B915-K1 is the stronger choice when VISCA/Pelco-D/P legacy PTZ control compatibility, quantified 145dB WDR, NEMA 4X corrosion certification, or sub-freezing operation below −30°C is required. The DWC-XPZA03Mi is the stronger choice when maximum IR range matters: its 350m Smart IR rating is more than double the B915-K1's 150m, a decisive advantage on large open perimeters. The DWC-XPZA03Mi also pairs a larger 1/1.8" sensor with 40× optical zoom (versus 36×) and adds AI auto-tracking, DIS, de-fog, 500 presets, and an included PoE injector. The B915-K1 holds the edge in legacy protocol breadth (VISCA, Pelco-D/P), fully enumerated ONVIF profiles (S/G/T/M), AC 24V alternative power, and verified seashore corrosion longevity. Choose the B915-K1 for VISCA/Pelco environments or coastal installations; choose the DWC-XPZA03Mi for maximum IR reach and AI tracking on open perimeters.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | ACTi B915-K1 | Digital Watchdog DWC-XPZA03Mi |
|---|---|---|
| Resolution | 3MP (2048×1536) | 3MP (2304×1296) |
| Image Sensor | 1/2.8" CMOS | 1/1.8" CMOS |
| Lens / Focal Length | 4.6–165.6mm (36× optical) | 6.5–260mm (40× optical + 16× digital) |
| Min Illumination (color) | 0.003 lux (F1.55) | 0.005 lux |
| Min Illumination (B/W) | 0 lux (IR on) | 0.0 lux (B/W) |
| IR Range | 150m | 350m (1,148 ft) Smart IR |
| WDR | 145dB | True WDR (dB not specified) |
| Max Frame Rate | 30fps @ 3MP | 60fps @ 2304×1296 |
| Video Compression | H.265, H.264, MJPEG | H.265, H.264, MJPEG |
| ONVIF Profiles | Profile S, G, T, M | ONVIF conformant (profiles not specified) |
| PTZ Range | Pan 360° endless; Tilt −20° to 200° | Pan 360° endless; Tilt 100° (−10° to 90°) |
| IP Rating | IP66, NEMA 4X | IP66 |
| IK / Impact Rating | IK10 | IK10 |
| Operating Temperature | −40°C to 55°C | −30°C to 60°C |
| Power Input | High PoE 75W or AC 24V | High PoE 75W (injector included) |
| Audio | Two-way (line-in / line-out) | 1 in / 1 out; G.711 compression |
| Alarm I/O | Not specified | 4 inputs / 2 outputs |
| Edge Analytics | VMD, People Counting | AI auto-tracking, Motion Detection |
| Warranty | 3 years (1 year continuous motion) | 2 years |
| Weight | Not specified | 12.72 lbs (5.77 kg) |
| Dimensions | Ø170mm × H260mm (6.69" × 10.24") | 8.89" × 14.3" (226 × 364mm) |
Frequently Asked Questions
Which should you choose: the B915-K1 or the DWC-XPZA03Mi?
The B915-K1 is the stronger choice when VISCA/Pelco-D/P legacy PTZ control compatibility, quantified 145dB WDR, NEMA 4X corrosion certification, or sub-freezing operation below −30°C is required. The DWC-XPZA03Mi is the stronger choice when maximum IR range matters: its 350m Smart IR rating is more than double the B915-K1's 150m, a decisive advantage on large open perimeters. The DWC-XPZA03Mi also pairs a larger 1/1.8" sensor with 40× optical zoom (versus 36×) and adds AI auto-tracking, DIS, de-fog, 500 presets, and an included PoE injector. The B915-K1 holds the edge in legacy protocol breadth (VISCA, Pelco-D/P), fully enumerated ONVIF profiles (S/G/T/M), AC 24V alternative power, and verified seashore corrosion longevity. Choose the B915-K1 for VISCA/Pelco environments or coastal installations; choose the DWC-XPZA03Mi for maximum IR reach and AI tracking on open perimeters.
Is the B915-K1 or DWC-XPZA03Mi better for low-light performance?
Both cameras reach 0 lux in B/W mode with IR active. In color mode, the B915-K1 specifies 0.003 lux and the DWC-XPZA03Mi specifies 0.005 lux, giving the B915-K1 a marginally lower color lux floor per published specs. However, the DWC-XPZA03Mi's IR range of 350m far exceeds the B915-K1's 150m, so for detecting subjects at long distances in total darkness the DWC-XPZA03Mi's extended illumination reach is the more operationally significant advantage.
Which camera works with older PTZ control systems using VISCA or Pelco protocols?
The ACTi B915-K1 explicitly lists VISCA, Pelco-D, and Pelco-P protocol support in addition to ONVIF. The DWC-XPZA03Mi's provided specifications list ONVIF conformance, RS485 camera control, and an extensive IP protocol stack, but do not mention VISCA, Pelco-D, or Pelco-P. If your VMS or control system requires native VISCA or Pelco serial/IP control, the B915-K1 is the verified choice based on available specs.
Can either camera be powered by a standard 802.3af PoE switch?
Neither camera can run at full capacity on standard 802.3af (15.4W). Both units require 75W High PoE (802.3bt Class 4 or higher). The B915-K1 lists 802.3af only as a notation alongside its 75W High PoE requirement—at 802.3af power levels it may operate in a reduced mode, but the spec does not detail that behavior. The DWC-XPZA03Mi ships with a High PoE injector included. Plan for 802.3bt-capable switches or injectors at both installations.
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