Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Akuvox R20K-2 2-Wire Door StationPhysical & Power Front panel: Aluminum alloy Camera: 2M pixels, automatic lighting KeypadYes Light sensor: Support Infrared sensor: Support Wiegand port: Support RS485 port: Support RF card reader: 13. 56MHz (with NFC) & 125kHz Relays out: 1 Inputs: 1 Microphone: 40dB Speaker: 4 3W Power Interface1 Power supply48VDC two wire power supply Water proof & Dust proof: IP65 Installation: Flush mounted or Wall mounted Flush mounted DIM: 226x108x52mm Wall
Physical & Power
- Front panel: Aluminum alloy
- Camera: 2M pixels, automatic lighting
- Keypad：Yes
- Light sensor: Support
- Infrared sensor: Support
- Wiegand port: Support
- RS485 port: Support
- RF card reader: 13.56MHz (with NFC) & 125kHz
- Relays out: 1
- Inputs: 1
- Microphone: -40dB
- Speaker: 4Ω / 3W
- Power Interface：1
- Power supply：48VDC two-wire power supply
- Water-proof & Dust-proof: IP65
- Installation: Flush-mounted or Wall-mounted
- Flush-mounted DIM: 226x108x52mm
- Wall-mounted DIM: 185x85x29mm
- Working Humidity: 10~90%
- Working Temperature: -30°C ~ +60°C
- Storage Temperature: -40°C ~ +70°C
Audio
- SIP v1 (RFC2543), SIP v2 (RFC3261)
- Narrowband audio codec: G.711a, G.711μ, G.729
- Broadband audio codec: G.722
- DTMF: In-band, out-of-band DTMF (RFC2833), SIP Info
- Echo Cancellation
- Voice Activation Detection
- Comfort Noise Generator
Video
- Sensor: 1/2.7”, CMOS
- Pixels: CIF, QCIF, VGA, 4CIF, 720p, 1080p
- Video codec: H.264
- Video resolution: up to 1920x1080p
- Max. image transfer rate: 1080p – 25fps
- Viewing angle: 110°(H) / 58°(V)
- High intensity IR LEDs for picture lighting during dark hours with internal light sensor
- Compatible to 3rd-Party-Video components, e.g. NVRs
Door Entry Feature
- Relays controlled individually by DTMF tones
- Camera permanently operational
- Auto-night mode with LED illumination
- White balance: auto
- Minimum illumination: 0.1LUX
Networking & Protocol
- Protocols support: IPv4, HTTP, HTTPS, FTP, SNMP, DNS, NTP, RTSP, RTP, TCP, UDP, ICMP, DHCP, ARP
Deployment & Maintenance
- Auto-Provisioning
- Web management portal
- Web-based packet dump
- Configuration backup / restore
- Entry log export
- Access table export / import
- Firmware upgrade
- System logs (include door access logs)
Application Scenario
- Office door phone with on-site or hosted IP-PBX
- Remote site entry over Internet
- Apartment/flat intercom with door access control
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
4.7 ★★★★★
Based on 355 reviews
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Product Reviews
★★★★★ 5
Finally Found a Magnesium That Works Without Side Effects
Size: 180 Count (Pack of 1)
I started taking this magnesium because I was dealing with frequent leg cramps, especially at night, and it has made a huge difference for me. Since using this brand consistently, my cramps have almost completely disappeared and my muscles feel much more relaxed. Another thing I really appreciate is that it does not upset my stomach or cause diarrhea like other magnesium supplements I tried before. After testing several brands, this is the only one that has worked well for me without uncomfortable side effects.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 5
BC
Size: 180 Count (Pack of 1)
Great product…great service
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
★★★★★ 5
Works great!
Size: 180 Count (Pack of 1)
Purchased this item at the recommendation of my PCP to help alleviate my Charlie Horses in my legs. Take 3 tabs an hour or so before bedtime, and it solved that issue.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
★★★★★ 4
It's easy to take one pill a day.
Size: 180 Count (Pack of 1)
I sometimes get cramps in my calves while sleeping, so I eat before bed. Personally, I think it's effective. I am satisfied with the product and delivery.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
★★★★★ 5
It works!!
Size: 180 Count (Pack of 1)
I wake up feeling refreshed..and ready for the day.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026