Dahua DHI-TPC-BF1241-B3F4-DW-S2 - 4MP Thermal Imaging IP CCTV Bullet Camera

Dahua DHI-TPC-BF1241-B3F4-DW-S2 — 4MP Thermal Imaging IP CCTV Bullet Camera, PoE, Night Vision, Heat Detection, 3.5mm Thermal Lens, 4mm Visible Lens

The Dahua DHI-TPC-BF1241-B3F4-DW-S2 is a two-channel bullet camera: a 256 x 192 thermal sensor behind a 3.5mm lens, alongside a 4MP visible camera with a 4mm lens and 30m IR. Thermal imaging picks out people and vehicles by their heat, so it keeps working in darkness and in scenes where a normal camera struggles to separate a target from the background.

With a 50.6 degree horizontal thermal view, the 3.5mm version suits yards, car parks and building perimeters at shorter range. Dahua's figures for this lens are human detection at 146m and vehicle detection at 449m, and heat detection of a 0.2m x 0.2m target at up to 45m.

On the camera itself you get tripwire and intrusion with human and vehicle classification, heat detection and alarm with hot and cold spot tracing, and smoking and call detection. It has a built-in white light and audio alarm, an IP67 housing rated from -30 to +60 degrees C, and runs on PoE or 12V DC.

Also listed as TPC-BF1241-B3F4-DW-S2.

Key features

• Thermal channel: 256 × 192 vanadium oxide uncooled focal plane detector with a 3.5mm F1.0 lens and a 50.6° × 37.8° field of view.
• Visible channel: 4MP 1/2.7-inch CMOS (2336 × 1752) with a 4mm F1.6 lens and a 71.2° × 52° field of view; 30m IR; 0.05 lux in colour, 0.005 lux in black and white, 0 lux with IR on.
• AI functions: heat detection and alarm, cold and hot spot trace, tripwire, intrusion, human and vehicle classification, smoking detection and call detection.
• Built-in white light and audio alarm.
• Dual image fusion of the visible and thermal channels, with 18 colour palettes and 3 fusion modes.
• Powered by 12V DC (±20%) or PoE, IP67, operating temperature -30 °C to +60 °C.
• Micro SD card slot up to 256GB; ONVIF, CGI and Dahua SDK.

Technical specification

Detection distances (3.5mm thermal lens)

Dahua measured these distances in set test conditions and says they are for reference only.

Works with

• Dahua PFA152-E pole mount bracket, listed by Dahua as an optional accessory.
• Dahua DH-PFA130-E junction box, listed by Dahua as an optional accessory.
• Dahua DHI-NVR4108HS-8P-EI 8 Channel PoE NVR: 8 PoE ports (802.3af/at) and ONVIF support for recording the camera's streams

Pairings are suggested on general compatibility (same brand, matching connection type and specification), not as tested combinations.

Also see the DHI-TPC-BF1241-B7F8-DW-S2 (7mm thermal lens) and the related DHI-TPC-DF1241-B3F4-DW-S2.

Common questions

What are the thermal and visible channels?

The camera has two sensors. The thermal channel is a 256 × 192 vanadium oxide detector with a 3.5mm lens. The visible channel is a 4MP sensor with a 4mm lens and 30m IR, working down to 0 lux with IR on.

Is this a temperature measurement (radiometric) camera?

It provides heat detection and alarm with cold and hot spot trace. Dahua's datasheet for this model does not list spot or area temperature measurement rules.

Why choose the 3.5mm version?

It gives the widest thermal view (50.6°) for yards and building perimeters. The 7mm version reaches further (human detection 292m) with a narrower 24° view.

Can it be powered by PoE?

Yes. Dahua lists the power supply as 12 VDC ±20% or PoE, with a maximum of 12.3 W on PoE.

Does it have Wi-Fi?

Not on this model. Dahua lists the Wi-Fi versions as separate -DW-WIFI-S2 models, and this one connects through its RJ-45 port.

What does the white light and audio alarm do?

Dahua lists a built-in white light and audio alarm on the camera. The datasheet gives no further detail on how it is triggered.

Can it record to a memory card?

Yes, it has a Micro SD slot for cards up to 256GB.

Full manufacturer specification: Dahua product page

Supplied by Zenith Security Co, Wolverhampton. We deliver to England, Scotland and Wales, or you can collect from our Wolverhampton trade counter (please call first).

Browse the full Dahua range, or contact us on 01902 902251. Trade customers are welcome at our Wolverhampton trade counter.