Dell 

SL525-DAO DELL PRO PLUS WIRELESS SPEAKERPHONE SL525

Mfg Part Number:  SL525-DAO  
Image may not reflect the actual item.
Price: $178.60
Quantity:
In Stock: 16
Last Updated: Jan 16, 2026
No Sales Tax except these states
, PO and Wire.

Intelligent Audio

Perfectly capturing voices with precision, the speakerphone delivers consistent, crystal-clear sound quality up to 2.5 meters between you and the device. Ideal for use in huddle spaces, home offices, or small conference rooms.

Discover the Difference with AI-based Noise Cancellation

Our AI-based noise cancellation microphone technology delivers remarkable clarity by filtering out background noise and enhancing human voices on both ends of the call. These audio samples highlight the performance difference, allowing you to hear how our speakerphone stands out in providing clear, distraction-free audio.

Experience the clarity that sets us apart. Our speakerphone doesn't just compete - it leads.

Robust Audio Performance | Versatile Connectivity | Connectivity options

Enjoy Bluetooth® 5.3 with Multi-point connectivity, wireless connectivity through Dell audio receiver for added reliability, or the built-in wired USB-C connection for a direct and seamless experience.

Universal device compatibility

Integrated USB-C connection with an in-box USB-A adapter ensures seamless compatibility across devices.

Convenient pairing

Your speakerphone is detected automatically & paired with only one click using Dell Pair - a simple and secure way to connect your speakerphone to your PC.

Reliable Performance

Ensuring trustworthy audio clarity, this wireless speakerphone ensures every word is heard and understood, making your work calls seamless and stress-free.

Up to 12 hours

Continuously work all day with a full charge.

Reliable and portable

Dust-tight and water-resistant protection ensures performance in any environment.

Collaboration-ready

This speakerphone is certified for Microsoft Teams and Zoom, and it is compatible with leading UC platforms.

Dell Display and Peripheral Manager

Experience Dell's singular, innovative application to optimize the performance of your entire Dell PC workspace.

Customize your audio experience

With this intuitive software, you can personalize your audio experience by assigning preset modes like Speech, Bass Boost, or Treble Boost, creating tailored audio presets with the Audio Equalizer, and toggling AI noise cancellation on/off to suit your environment. Stay effortlessly updated with the latest firmware updates, ensuring optimal performance and control over your sound environment.

Dell Audio App

Conveniently access your wireless speakerphone controls right from your smartphone and start enjoying clear communication and personalized preferences.

Main Specification
General Information
Manufacturer Dell Technologies
Manufacturer Part Number SL525-DAO
Manufacturer Website Address http://www.delltechnologies.com
Brand Name Dell
Product Line Pro Plus
Product Model SL525
Product Name Pro Plus Wireless Speakerphone - SL525
Product Type Speakerphone
Technical Information
Connectivity Technology Wired/Wireless
Wireless Technology Bluetooth
Bluetooth Standard Bluetooth 5.3
Bluetooth Range 98.43 ft
Cable Length 29.53"
Application/Usage Conference Room
Application/Usage Home
Application/Usage Huddle Room
Application/Usage Home Office Room
Plug & Play Support Yes
Artificial Intelligence Noise Cancelling (AINC) Yes
Cable Type USB Type-C
AI-powered Yes
Ingress Protection (IP) Rating IP64
Maximum Number of Paired Devices Supported 8
Maximum Number of Simultaneous Connections 2
Features Water Resistant
Features Full Duplex Audio
Features Echo Cancellation
Features Digital Signal Processing
Microphone
Number of Microphones 4
Polar Pattern Omni-directional
Microphone Technology Digital Micro-electromechanical Systems (MEMS)
Microphone Frequency Response 100Hz - 14kHz
Microphone Pickup Range 98.40"
Microphone Signal to Noise Ratio (SNR A-Weighted) 65 dB(A)
Speaker
Peak Audio Output 86 dB
RMS Output Power 8 W
Speaker Size/Type 60 mm/Dynamic
Sound Pressure Level 86 dB
Speaker Output Mode Mono
Speaker Frequency Response 100Hz - 14kHz (Talk Mode)
Speaker Frequency Response 90Hz - 20kHz (Music Mode)
Interfaces/Ports
USB Yes
USB Type-C Yes
Host Interface USB-C
Controls/Indicators
Status Indicators Bluetooth
Status Indicators Volume Down
Status Indicators On Call
Status Indicators Volume Up
Status Indicators Battery Level
Status Indicators Mute
Status Indicators Powered On
Status Indicators Teams Active/Notifications
Controls Answer Call
Controls End Call
Controls Volume Down
Controls Microsoft Teams
Controls Volume Up
Controls Microphone Mute/Unmute
Battery Information
Battery Rechargeable Yes
Battery Chemistry Lithium Polymer (Li-Polymer)
Battery Capacity 3200
Maximum Battery Recharge Time 2.50 Hour
Battery Talk Time 12 Hour
Battery Talk Time Details
  • 12 Hour (talk mode)
  • 9 Hour (music mode)


Power Description
Power Source Battery
Minimum Charging Power 2.50 W
Maximum Charging Power 15 W
Physical Characteristics
Form Factor Desktop
Depth 1.54"
Diameter 4.92"
Weight (Approximate) 12.52 oz
Miscellaneous
Package Contents
  • Pro Plus Wireless Speakerphone - SL525
  • Wireless Audio Receiver
  • Travel Pouch
  • Quick Start Guide & Documents
  • USB-A Adapter
Compatibility
  • Dell PC
  • Smartphone


Operating System Supported ChromeOS
Operating System Supported Linux
Operating System Supported Windows 10 (64-bit)
Operating System Supported Ubuntu 24.04
Operating System Supported Windows 11 (64-bit)
Operating System Supported Mac OS
Charger Included No
Software Supported Dell Device Management Console
Software Supported Dell Display and Peripheral Manager
Software Supported Dell Audio App
Unified Communications Platform Zoom
Unified Communications Platform Microsoft Teams
TAA Compliant No
Warranty
Limited Warranty 3 Year
Additional Warranty Information

Dell will send a replacement unit the next business day if deemed necessary after remote diagnosis.

WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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