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Description
Revolabs FLX UC 1500 IP & USB Conference Phone with Extension MicrophonesSIP and USB Conference Speakerphone Base with 4 Mics, Tweeter & Mid Woofer Dialer Unit with Full Color Display Two Directional Extension Microphones Bridges IP and USB Phone Calls 160 20,000 Hz Frequency Response 4 Mics in Base for 360 Coverage Echo Cancellation Full Duplex Operation The FLX UC 1500 from Revolabs is an IP and USB speakerphone with two extension microphones, designed to accommodate a wide variety of conferencing applications for
- SIP and USB Conference Speakerphone
- Base with 4 Mics, Tweeter & Mid-Woofer
- Dialer Unit with Full Color Display
- Two Directional Extension Microphones
- Bridges IP and USB Phone Calls
- 160 - 20,000 Hz Frequency Response
- 4 Mics in Base for 360° Coverage
- Echo Cancellation
- Full Duplex Operation
The FLX UC 1500 from Revolabs is an IP and USB speakerphone with two extension microphones, designed to accommodate a wide variety of conferencing applications for business. Doubling as a high-performance IP conference phone and a USB audio device, the FLX UC 1500's design enables unified communications by supporting both USB audio for PC communication tools and SIP telephony for IP PBXs. It provides the ability to bridge IP and USB phone calls, allowing parties to communicate even when using different mediums. Furthermore, it is an idea solution for larger conference rooms, offering two additional directional microphones for added coverage.
- Expanded Room Coverage
- Four internal microphones on the base plus two directional extension mics allows meeting participants to be clearly picked up and transmitted to the far end due, offering extended 360° coverage
- Full Duplex Audio
- Participants can communicate naturally as if they are in the same room; the technology in the FLX UC 1500 supports simultaneous audio play back and audio capture, ensuring every word is heard
- Integrated Echo Cancellation
- Built-in digital signal processing separates out the speech of the meeting participant, room noise, and audio from the speaker of the device to ensure only the correct audio is transmitted
UPC: 040232209550
| SIP | Call Handling: Make, Answer, Hold, Resume, Transfer (Blind and Supervised), Forwarding, Do not disturb, Redial, Call Timer, Call ID, Speed Dial, Missed Call Notifications, Voice Mail Notifications (switch configured) Call Bridging: Supports Bridging SIP and USB Calls. Join, Split, Hold, Resume, 3+1 Lines: Up to 2 SIP calls, 1 USB call, plus the user Codecs: G.711 (A-law and u-law), G.722, G.726, G.729 DTMF Support: RTP event, SIP in-band, SIP info package support Security: SRTP/SRTCP Support (RFC 1889), IETF SIP support (RFC 3261 and companion RFCs), SSIP, Password protected configuration files, Password protected login, HTTPS Secure Provisioning Network & Provisioning: DHCP or Static IP, Server Based Central Provisioning, Web Portal for Individual Unit Configuration |
| Features | Base Unit: Capacitive Touch Buttons for On-Hook, Off-Hook, Volume Up/Down, Mute Dialer Keypad: 12-key telephone keypad, 4 context-dependent soft keys, 5 Navigational buttons with select key, On-Hook, Off-Hook, Volume Up/Down, Mute, Redial, Menu Dialer Display: 3.5" diagonal color graphics display, 480 x 320 pixels User Interface: Date & Time Display, User configurable Local Contact List, Call History (Missed Calls, Placed Calls, Received Calls), User-Selectable Ring Tones, Unicode UTF-16 Character Support, Multilingual User Interface Extension Mics: Capacitive Touch Button for Mute and Status indicator |
| Audio | Speaker Elements: Tweeter, mid-woofer Speaker Frequency Response: 160 - 20,000 Hz Max SPL: 91 dB at 1 m Microphones: 4 embedded directional, 2 directional extension microphones Microphone Coverage: 360° audio pick-up Microphone Frequency Response: 160 - 12,000 Hz Echo Cancellation: Individual AEC per microphone Full Duplex: Yes |
| Interfaces | Power: Power over Ethernet (PoE) USB: Mini USB 2.0 connector |
| Environmental | Operating Temperature: 32 - 104°F (0 - 40°C) Storage Temperature: -22 - 131°F (-30 - 55°C) Relative Humidity: 20%-85% (non-condensing) |
| Compliance | Safety: CE Mark: EN 60950, IEC 60950, UL 60950, CSE C22.2, No. 60950, AS/NZS 60950 EMC: ICES-003 Class B, FCC (47 CRF Part 15) Class B, EN55022 Class B, CISPR22 Class B, AS/NZS CISPR22 Class B, VCCI Class B, EN55024 Environmental: RoHS |
| Power | IEEE 802.3af Power over Ethernet (PoE) |
| Dimensions | 4.84 x 5.9 x 5.9" (123 x 150 x 150 mm), base unit 1.6 x 5.2 x 5.3" (41 x 133 x 136 mm), dialer unit |
| Weight | 3 lb (1.3 kg) |
| Packaging Info | |
|---|---|
| Package Weight | 5.55 lb |
| Box Dimensions (LxWxH) | 11.5 x 8.6 x 8.5" |
In the Box
Revolabs FLX UC 1500 IP & USB Conference Phone with Extension Microphones
- Base Unit
- Dialer Unit
- 2 x Extension Microphones
- 6.56" (2.0m) USB Cable
- 25' (7.62m) Ethernet Cable
- Limited 1-Year Warranty
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4.3 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Slightly Inaccurate but Works Well
Pros:
Works perfectly for what I need it for. I use an aeropress and it's super easy to weigh the coffee going in and then the water on top of that. Then start the timer for the brew time and you've got a beautiful cup of coffee! Very bright display, easy to read, and comes with a rubber pad which makes cleanup easy.
Cons:
Not super accurate, but it's fine for making coffee unless you want to be exact. Sometimes the tare doesn't hold perfectly. For example, put your coffee on the scale. Tare it. Take it off. Put it back on. It might read a tenth of a gram or so one way or the other. Never impacted my coffee routine...
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Reviewed in the United States on March 13, 2021
★★★★★ 5
Been working well for over a year
Had this for over a year now and no real issues. The only issue I can think of is that if something is a bit too close to the scale, the scale can fluctuate a bit by a gram or so. Just make sure nothing is touching it, especially anything electronic.
Beyond that, it's a no-nonsense scale that works great with actual tactile buttons. Its refresh rate can lag behind a tiny bit, but you get used to it by stopping your pours in anticipation. For example, I typically do 300mL pours in total, and I usually start slowing down/stopping at around 280g. Battery life is pretty good, but the battery life indicator doesn't do a good job of letting you know when you need to replace the batteries. So you may end up with it powering off mid-brew, but I've only had to replace the batteries once despite daily use over the past year or so. That being said, it's useful to also do stuff like the 4:6 method based on water level vs timer too.
I'd also say it may not be extremely accurate as sometimes it fluctuates by .1 grams, but it is accurate enough for practical purposes. For reference, .1g is simply ~1 coffee bean, and unless you're an espresso perfectionist, 1 coffee bean isn't going to make any real difference.
In summary:
+ Just the essentials if you only want the essentials
+ Tactile buttons
+ Display is pretty nice
+ Accurate enough for practical purposes
+ Battery life very good
+ Will work for at least a year, can't say any longer until I own it for longer
+ Great for the cost
= WIll not refresh weight as quickly as say an acacia scale which costs at least four times as much, easy to compensate for
- Battery life indicator isn't great, so it may power off mid-brew every half year or so
- Sensitive to adjacent electronic devices, 1 or 2 inches is enough distance
- Sensitive to adjacent objects, be mindful of anything that is touching the silicone, even if it's barely touching by a hair
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Reviewed in the United States on September 7, 2025
★★★★★ 5
Works Perfectly, Ignore "Drift" Reviews
Color: Onyx Black, Color: Onyx Black
I'm very happy with the accuracy and refresh rate of the scale. The two tone LED color scheme is a nice touch. I also like that the silicone cover is well-affixed to the scale and won't slide around. I only wish the scale came in white!
Don't be fooled by other reviews. This scale doesn't "drift" any more or less than any other scale. Those people who say otherwise are likely storing it in a very different temperature environment than their use area. See photos for the test I did with boiling hot water in an uninsulated carafe. 0.0g drift on all tests, with or without the silicone protector, after several minutes of letting the carafe sit on the scale surface.
The only time I experienced measurement drift was when I got the package from 30F freezing outdoor conditions, unboxed it and tried it out without letting the scale warm up to ambient. The measured weight slowly dropped until it warmed up to 70F room temp; since then it's been rock solid. That is totally normal for any scale that any manufacturer, cheap or expensive, makes. It's just how this kind of scale works.
Overall if you're looking for a nice scale with timer functionality, I highly recommend the Greater Goods scale.
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Reviewed in the United States on December 22, 2025
★★★★★ 5
Precise and durable
Color: Birch
Best coffee scale for the price. No crazy features which makes it very easy to use. Small enough to store in a drawer and durable enough to not worry about it breaking. Scale is very precise which makes it great for V60 and Chemex
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Great Coffee Scale
Color: Onyx Black, Color: Onyx Black
Absolutely love this coffee scale! For starters it was so well packaged. It is definitely worth what you pay for it. It has a silicon removable mat that fits snugly over the top of the scale. That makes it easy to pop it off to clean if you spill on it. The scale responds instantly to changes in weight which helps to give you accurate pour over results every single time.
The scale also includes a built-in timer with a count-up or down control. It also has an auto shutoff but gives you plenty of time before it shuts off. There are multiple units to choose from when measuring. Overall just a really great scale and I'm so glad I purchased it!
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Reviewed in the United States on April 9, 2026