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Description
Akuvox R20Bx4 SIP Video Doorphone – 4 Call Buttons, 2MP Camera, PoE, IP65 Rated, ONVIF Compatible Access ControlAkuvox R20Bx4 SIP Video Doorphone Key Product Specifications: Manufacturer: Akuvox Model: R20Bx4 Product Type: SIP Video Doorphone Front Panel: Aluminum Alloy Camera: 2M Pixels, Automatic Lighting Camera Viewing Angle: 110 (H) 58 (V) Button: 4 Call Buttons with Name Plates RF Card Reader: 13. 56MHz (with NFC) & 125kHz Ethernet Port: RJ45, 10 100Mbps Adaptive Relays Out: 2 Inputs: 2 Wiegand Port: Supported RS485 Port: Supported Light Sensor: Supported
Akuvox R20Bx4 SIP Video Doorphone Key Product Specifications:
- Manufacturer: Akuvox
- Model: R20Bx4
- Product Type: SIP Video Doorphone
- Front Panel: Aluminum Alloy
- Camera: 2M Pixels, Automatic Lighting
- Camera Viewing Angle: 110° (H) / 58° (V)
- Button: 4 Call Buttons with Name Plates
- RF Card Reader: 13.56MHz (with NFC) & 125kHz
- Ethernet Port: RJ45, 10/100Mbps Adaptive
- Relays Out: 2
- Inputs: 2
- Wiegand Port: Supported
- RS485 Port: Supported
- Light Sensor: Supported
- Infrared Sensor: Supported
- PoE: 802.3af
- Protection Rating: IP65
- Installation: Flush-Mounted or Wall-Mounted
Akuvox R20Bx4 is a durable SIP video doorphone designed for entrance monitoring and access control at best price in apartments, offices, and multi-tenant buildings. Equipped with a 2MP wide-angle camera, four call buttons with name plates, NFC and 125kHz card readers, and a rugged aluminum alloy front panel, it provides reliable visitor communication and secure access management. The R20Bx4 supports SIP and ONVIF standards, PoE connectivity, two-way audio with echo cancellation, and IP65-rated protection, making it suitable for both indoor and outdoor installations.
Akuvox R20Bx4 SIP Video Doorphone Key Product Features:
- SIP video doorphone with four call buttons and name plates
- 2MP camera with automatic lighting
- 110° wide-angle horizontal viewing angle
- NFC and 125kHz RF card reader support
- PoE (IEEE 802.3af) powered
- Two-way audio communication with echo cancellation
- Complies with SIP standard
- ONVIF compatible for surveillance integration
- IP65-rated water and dust protection
- Flush-mounted or wall-mounted installation
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1102 reviews
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Product Reviews
★★★★★ 5
Great stuff
Seemed to work as well as or better than some more expensive catalytic converter cleaners. I put it in while at 1/3 tank and my Check Engine light went out almost immediately once I started driving. My Tundra has almost 230,000 miles and still runs great but was getting a little harder to start after I switched from full synthetic oil to conventional. I’ll never do that again and immediately switched back but the damage was done. Check engine light came on and I had to crank longer to get it started. Adding this Liquid Moly fixed both issues temporarily. I have to wonder if this was used regularly, say every 3 months, if it would clean the catalytic converter more permanently?
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Reviewed in the United States on December 29, 2025
★★★★★ 3
Ehh??
Didn't work for my on my 17 hyundai accent with 90k on it.
I poured the whole bottle in with a half tank of gas. And went for a 3 day italian tune up.... no dice.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Works great
Follow instructions and it will work. Had a p420 code, caught it early used this. No more code and passed emissions
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Nice Filter Wrench for my Volvo V70XC!
Size: 86mm x 16
I was needing a filter wrench for my 2001 Volvo V70XC and couldn't find anything that fit from the local auto parts stores. Not knowing what to expect, I took a chance on this one since most of the reviews were 5 star and the price was exceptional.
When I received it, I was quite pleased with the construction and finish. I have a brand new oil filter housing for my Volvo (since the one currently on my car is chewed up from the former owner using slip-jaw pliers or something on it) and the fit is perfect! I have worked as a mechanic my whole life (aircraft & automotive), and spent a couple of years as a technician at an automotive dealership and I can say that the tool looks like it is designed for heavy-duty use.
The stamped steel housing is thicker than those found in local auto parts stores and the drive adapter has a thick arc welded bead along the inside of the tool. So, it appears to be made to hold up to some fairly heavy torque. Although the product description states that it is 1/2", the drive adapter is actually made for direct attachment to a 3/8" drive. Perhaps this error stems from the fact that they offer a much larger wrench (118-131mm) and this is a more accurate description of their other offerings.
The 3/8" drive adapter works perfectly and a 21mm socket fits nicely on the external hex. Fits with SAE sizes are a mixed bag, though. I was able to attach a 13/16" 12-pt. box-end wrench, but not the opposing open-end. A similarly sized 13/16" 6-pt. socket was extremely tight, so I wouldn't recommend this size and would just go with the 21mm if you had to use the external hex. Otherwise, just use the 3/8" drive adapter for easiest use of this tool. The adapter also incorporates ball detents on all four sides of the internal 3/8" drive, so your ratchet or extension won't easily fall off while in use.
Since this tool is made for oil filter removal & installation, I'm sure that it will deliver as promised. I'll post an update after my next oil change and I get a chance to use it and install the new filter housing I have.
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Reviewed in the United States on January 25, 2014
★★★★★ 5
Makes the job easy
Size: 88.5mm x 16
Worked well for removing and installing the oil filter housing.
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Reviewed in the United States on April 17, 2026
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