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Useful accessory for stable camera installations.
PFM820
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Dahua CVI Accessories
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PFM820
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PFM820 Overview
PFM820 is an advanced IP turret camera that delivers 4K resolution with a fixed lens design and a 1/2.8" CMOS sensor for superior image clarity. It offers infrared night vision with an IR range of 50m and employs H.265 video compression alongside 2-Way Audio support.
Featuring robust connectivity with PoE and Wi-Fi options, the camera is ONVIF compliant and supports local storage via a MicroSD Slot as well as NVR and cloud storage alternatives. With an IP66 weather rating and IK10 vandal resistance, the PFM820 is ideally suited for indoor retail surveillance, perimeter defense, license plate recognition, and warehouse monitoring.
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PFM820 Specifications
- Product Type
- Security Camera
- Camera Type
- Turret
- Technology
- IP Camera
- Resolution
- 4K
- Lens Type
- Fixed
- Smart Features
- Motion Detection
- Mounting Type
- Wall
- Color
- Black
- Use Case
- Indoor / Retail / Perimeter Protection / Warehouse
- Focal Length
- 4mm
- Image Sensor
- 1/2.8" CMOS
- Frame Rate
- 30 FPS
- Infrared Night Vision
- 50m
- Low Light Technology
- Starlight
- Day/Night Mode
- True Day/Night (ICR)
- Video Compression
- H.265
- Audio Support
- 2-Way Audio
- Storage Option
- MicroSD Slot
- Max Storage Capacity
- 128 GB
- Power Type
- PoE
- Weather Rating
- IP66
- Vandal Resistance
- IK10
- ONVIF Compliant
- Yes
- Product Name
- PFM820 High-Definition IP Turret Camera
- Height
- 2.5 inches
- Width
- 3 inches
- Depth
- 3.5 inches
- Weight
- 1.2 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| PFM820 |  HAC-HDW1800M |  HAC-HDW1200EM-A-S4 |  A511K02-B |  HAC-HFW3802E-ZH-VP | |
|---|---|---|---|---|---|
| Product Type | Security Camera | Security Camera | Security Camera | Security Camera | Security Camera |
| Camera Type | Turret | Bullet | Turret | Turret | Turret |
| Technology | IP Camera | IP Camera | IP Camera | IP Camera | IP Camera |
| Resolution | 4K | 4K | 4MP | 4K | 4MP |
| Lens Type | Fixed | Motorized | Varifocal | Motorized | Motorized |
| Smart Features | Motion Detection | Motion Detection | ANPR | Motion Detection / Face Detection / ANPR | Motion Detection |
| Mounting Type | Wall | Wall | Wall | Wall | Ceiling |
| Color | Black | Black | Black | Black | Black |
| Use Case | Indoor / Retail / Perimeter Protection / Warehouse | Retail | Indoor / Retail / Perimeter Protection / Warehouse | Indoor / Retail / Perimeter Protection / Warehouse | Retail / Perimeter Protection / Warehouse |
| Focal Length | 4mm | 4.7–94mm | 2.7–13.5mm | 2.7–13.5mm | 2.7–13.5mm |
| Image Sensor | 1/2.8" CMOS | 1/2.8 CMOS | 1/3" CMOS | 1/2.8" CMOS | 1/2.8" CMOS |
| Frame Rate | 30 FPS | 30 FPS | 30 FPS | 30 FPS | 30 FPS |
| Infrared Night Vision | 50m | 80m | 30m | 50m | 30m |
| Low Light Technology | Starlight | EXIR | EXIR | Starlight | EXIR |
| Day/Night Mode | True Day/Night (ICR) | True Day/Night (ICR) | True Day/Night (ICR) | True Day/Night (ICR) | True Day/Night (ICR) |
| Video Compression | H.265 | H.265 | H.265 | H.265 | H.265+ |
| Audio Support | 2-Way Audio | 2-Way Audio | Built-in Mic | 2-Way Audio | 2-Way Audio |
| Storage Option | MicroSD Slot | MicroSD Slot | MicroSD Slot | MicroSD Slot | MicroSD Slot |
| Max Storage Capacity | 128 GB | 128 GB | 128 GB | 128 GB | 128 GB |
| Power Type | PoE | PoE | PoE | PoE | PoE |
| Weather Rating | IP66 | IP67 | IP67 | IP66 | IP67 |
| Vandal Resistance | IK10 | IK08 | IK08 | N/A | IK10 |
| ONVIF Compliant | Yes | Yes | Yes | Yes | Yes |
| Product Name | PFM820 High-Definition IP Turret Camera | HAC-HDW1800M | HAC-HDW1200EM-A-S4 | A511K02-B | HAC-HFW3802E-ZH-VP |
| Height | 2.5 inches | 2.3 inches | 3 inches | 2.5 inches | 2.5 inches |
| Width | 3 inches | 4.1 inches | 4 inches | 3.0 inches | 3.5 inches |
| Depth | 3.5 inches | 2.3 inches | 3 inches | 3.0 inches | 3.0 inches |
| Weight | 1.2 lbs | 1.2 lbs | 1.2 lbs | 1.2 lbs | 1.2 lbs |
Reviews & Ratings
M
Marcus Hill
5
Improves reliability of surveillance setups.
G
Gareth Owen
4
Well built and easy to use.
N
Neil Foster
5
Good quality accessory.
T
Trevor James
5
Works as expected.
O
Oliver Reed
4
Reliable CCTV component.
Questions & Answers
What is the Dahua PFM820 CVI accessory?
The Dahua PFM820 is a 4-channel passive video and power transceiver designed for CVI, TVI, AHD and CVBS signals, enabling simultaneous transmission of video and power over twisted-pair cabling.
How many channels does the Dahua PFM820 support?
The Dahua PFM820 supports four independent channels, allowing you to connect and transmit signals from up to four cameras over a single device.
Which camera formats are compatible with the Dahua PFM820?
The Dahua PFM820 is compatible with Dahua and third-party CVI, TVI, AHD and CVBS analog cameras, making it suitable for most HD analogue CCTV installations.
What is the maximum transmission distance of the Dahua PFM820?
When using Cat5e cable, the Dahua PFM820 can transmit 720p video up to 800 meters and 1080p video up to 500 meters without signal boosters.
What power input does the Dahua PFM820 require?
The Dahua PFM820 accepts a 9–15 VDC power input and delivers up to 400 mA per channel to power connected cameras.
Can the Dahua PFM820 transmit both video and power over the same cable?
Yes. The Dahua PFM820 combines video and DC power on a single twisted-pair cable, simplifying cabling and reducing installation costs.
What type of cabling is recommended for the Dahua PFM820?
Use UTP Cat5e or better twisted-pair cabling to ensure reliable video and power transmission with the Dahua PFM820.
How do I install the Dahua PFM820 transceiver?
Connect BNC video and DC power inputs from your DVR or power supply to the PFM820’s IN ports, run Cat5e cable to the camera location, then connect the OUT ports to the camera’s BNC and DC connectors.
Does the Dahua PFM820 support PoC (Power over Coax)?
No. The Dahua PFM820 is a passive balun that transmits power and video over twisted pair, not over coaxial cable.
What is the operating temperature range of the Dahua PFM820?
The Dahua PFM820 operates reliably between –20 °C and +60 °C, making it suitable for most indoor and sheltered outdoor installations.
Is surge protection built into the Dahua PFM820?
No. The Dahua PFM820 is a passive device and does not include surge protection; use external surge protectors to safeguard your system.
What are the physical dimensions of the Dahua PFM820?
The Dahua PFM820 measures 82 mm × 30 mm × 25 mm (L×W×H), allowing for compact installation in tight spaces.
How much does the Dahua PFM820 weigh?
The Dahua PFM820 weighs approximately 150 grams, making it lightweight and easy to mount.
What troubleshooting steps should I take if a channel on the Dahua PFM820 fails?
Verify cable continuity, check power input, swap Cat5e pairs, test with a known working camera, and ensure BNC/DC connectors are firmly seated.
Can I cascade multiple Dahua PFM820 units for additional channels?
Yes. You can deploy multiple Dahua PFM820 units side by side or in series to accommodate more than four cameras in larger systems.
What warranty does the Dahua PFM820 include?
The Dahua PFM820 is backed by Dahua’s standard two-year limited warranty, covering manufacturing defects under normal use.