Cookies Setting
We use cookies to improve your browsing experience, analyze traffic, and personalize content. By using this site, you agree to our use of cookies. For more details, please check our Cookie Policy.
IP Intercom
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
Network Intercom Panel
NAS-8521D/E
Network Intercom Panel
  • Split-type Design
  • Cyclic Monitoring
  • Built-in 15W Speaker
  • 2-way communication
  • Automatic Audio Inspection
Request Quote
Datasheet
DESCRIPTION PARAMETER FAQS Download
Home ProductIntercom SystemIP Intercom
Built-in Speaker & Microphone & Durable
Features a 3W speaker and microphone capsule, enabling clear broadcast reception and hands-free two-way communication. Constructed with a full-metal, anti-corrosion brushed aluminum panel, equipped with anti-pry protection and tamper alarm for enhanced security.
Flexible Communication
Single CALL button for emergency assistance (target set via server), supports full-duplex intercom, and customizable call tones for connection, busy, and hang-up alerts.
PARAMETER
Parameter
Specification
Power Supply
DC 12V/3.3A
Power Consumption
≤23W
Network Protocol
FTP, HTTP, TCP/IP, UDP, ARP, ICMP, IGMP
Audio Sampling Rate
8kHz-44.1kHz, 16bit
Transmission Bit Rate
8kbps-320kbps
S/N Ratio
≥85dB
Frequency Response
20Hz-16kHz
Interface
1×Intercom Panel Input, 1×Intercom Panel Output
Dimensions
150×62×31mm
Weight
0.3kg
Standard Accessories
2×8-Pin Terminal Block Connector 1×Installation Manual
Optional Accessories
DC 12V/2A Power Adapter (US/EU/UK/AU)
IP Rating
IP54
Packed Dimensions 
210*146*65(mm)
Gross Weight
0.5Kg
FAQS
Q1: What type of communication does the NAS-8521D support?
The NAS-8521D supports two-way full duplex voice communication, allowing seamless and real-time communication with the IP audio intercom master station in the master control room.
Q2: Can the NAS-8521D withstand tampering or vandalism?
Yes, the NAS-8521D is equipped with tamper alarm functionality. If the panel is forcibly damaged, it will trigger a warning siren to alert users of any tampering attempts.
Q3: How do I make a call with the NAS-8521D?
The NAS-8521D features a single-button design, enabling one-touch calling to the designated target intercom device for quick and efficient communication.
Documents Download
related Cases
Al Faris International Schools
SPON provided a IP PA solution for 160 classrooms and outdoor zones, featuring IP ceiling and horn speakers, paging microphones, and centralized management for smarter campus communication.
Read More
Hadab Hotel
SPON IP PA System Enhances Audio Communications in Hadab Hotel
Read More
Phra Nang Klao Hospital
Enhancing Safety at Phra Nang Klao Hospital with SPON's IP Intercom System
Read More
Ecuador Smart City
SPON’s Emergency Call Box solution for Ecuador’s Smart City project. Features include one-touch emergency alerts, visual intercom, emergency broadcasting, and durable outdoor design to enhance urban safety and connectivity.
Read More
Xiamen Overseas Port
Discover how SPON provided an Intelligent Dispatch and Seaport IP Intercom System for Xiamen Overseas Automated Port, integrating IoT, intercom, video communication, and emergency response to enhance safety, scheduling, and operational efficiency.
Read More
Xinjiang Museum
SPON's Surveillance Microphone System Boosts Xinjiang Museum's Security.
Read More
Ankang Hospital
SPON's IP PA and Intercom System Elevates Ankang Hospital's Audio Communication.
Read More
Multi Purpose Hall Conference System
Free movement for speakers, clear sound, smart video, and easy system management.
Read More
Dafengyakou Highway
SPON IP PA & Intercom System enhances highway safety on the Dafengya Pass. Real-time road condition broadcasts, weather updates, patrol communication, and emergency assistance ensure safe driving on high-risk mountain highways.
Read More
Beijing Primary School
Discover how SPON directional speakers help schools achieve precise sound coverage in playgrounds. Ideal for noise control and clear announcements.
Read More
new case detail
Read More
Humen Railway Station—IP PA System
SPON delivered IP PA System to Humen Railway Station, optimizing communication and passenger experience.
Read More
Automated Port
Guangxi Qinzhou Port employs SPON's IP Intercom System, Enhancing Clear Communication And Safety In Challenging Environments.
Read More
Xiamen Coastal Area
SPON’s Outdoor IP PA Intercom System designed for coastal areas. Provides background music, public announcements, emergency alerts, and two-way communication. Reliable, waterproof, and easy to manage.
Read More
China Merchants Bank—IP Surveillance Microphone
SPON deployed HD directional IP surveillance microphones for China Merchants Bank branches in Henan, ensuring high-definition audio, noise cancellation, and reliable incident evidence.
Read More
Heavy Industries Port
Improve safety and communication in industrial environments with SPON's IP intercom systems. Discover rugged outdoor video phones, emergency call stations, and smart IoT solutions for port operations.
Read More
China Agricultural Bank
SPON Enhances Counter Intercom For China Agricultural Bank.
Read More
Liaocheng School
How School built a smart and safe campus with SPON IP PA & Intercom System. Supports class bell ringing, music, exam broadcasting, emergency one-click intercom, and centralized management.
Read More
Huaihua University
Discover how University built a smart campus with SPON IP PA Paging System. Supports multi-classroom broadcasting, local PA, exam announcements, and one-button intercom for real-time technical support.
Read More
Hangzhou Asian Games
SPON supported the Hangzhou Asian Games with its reliable IP public address intercom system, providing information announcements, background music, emergency alerts, and one-touch assistance.
Read More