2 Mile PTT Communication Wireless Audio Intercom Kit

2-Mile PTT Communication Wireless Audio Intercom Kit with Countertop Microphone & High-Power Talk-Back Speaker

The ZDL-821 2 Mile PTT Communication Wireless Audio Intercom Kit is a long-range wireless audio communication that features a countertop microphone with push-to-talk (PTT) functionality and a powerful 70-watt wireless speaker. This system offers reliable, PTT audio communication without the need for Wi-Fi or cellular networks. Pairing both devices is as simple as using onboard channel selector button to choose suitable communication channel to add unlimited extensions to form a communication group.

Ideal for event management and backstage coordination, industrial and warehouse operations, Hospitality and guest services, Security teams and patrolling staff and School campuses, churches, and convention centers

This 2-Mile Wireless Audio Intercom Kit combines push-to-talk convenience with long-range communication, high-output audio, and flexible device compatibility. Whether you’re managing foot traffic, coordinating teams, or communicating across large areas, this system provides a dependable and professional solution.

Key Features

• • Countertop Microphone with PTT

    • Push-to-Talk (PTT) Button: Enables instant, one-touch communication for live voice transmission.
    • Built-in Volume Control Knob: Adjustable output for precise audio levels during operation.
    • Desktop-Friendly Design: Stable base for use on reception desks, control stations, or cashier counters.

  • Wireless Talk-Back Speaker – 70W Output

    • Powerful 70-Watt Audio Output: Delivers crystal-clear sound with excellent coverage in large or noisy areas.
    • Auxiliary Microphone Input: Connects to external microphones for added audio flexibility.
    • Dual Power Compatibility: Operates on AC 100~240V or 12VDC power sources for maximum deployment versatility.
    • Lightweight and Portable Design: Easy to install and relocate without compromising sound performance.

  • Wireless Transmission & Range

    • Up to 2-Mile Communication Range: Reliable wireless audio link in open environments—ideal for large campuses or facility-wide coverage.
    • 16 Preset Channels: Offers secure, interference-free communication with quick channel switching.
    • VOX Support (Voice Activated Transmission): Hands-free operation triggers audio transmission upon voice detection.

  • System Compatibility & Scalability

    • Supports ZDL-800 Wireless PTT Intercom Units: Seamlessly integrates with other devices in the ZDL-800 system lineup.
    • Compatible with ZDL-804 Bluetooth Wireless Neck Band Intercoms: Easily pairs with wearable Bluetooth intercoms for flexible staff coordination, Group Communication Ready, Up to 99 Extensions Per Group
    • Unlimited Total Extension Support: Scalable to accommodate teams of any size, across various zones or departments.

Device Specification

• • ZDL-800 Wireless Push-To-Talk Intercom Radio

    • Communication Type: Audio [Push-To-Talk, Voice Activated [VOX] Hands-Free]
    • Power Supply: 110 ~ 240 VDC 12V 1000mA
    • Power Consumption: 500mA
    • Speaker Output: Master: 5W
    • Microphone Sensitivity: 36-38db
    • Compatibility: Support ZDL-802 [Speaker], ZDL-803 Head/Neck Band, ZDL-804 [Radio].
    • Ambient Temperature: -22°F ~ 122°F
    • Size: ZDL-800 = [H] 1.5” X [W] 3.5” X [L] 5.0” | Microphone Neck Stand:  12-Inches High

  • ZDL-802 Wireless Push-To-Talk Intercom Speaker

    • Communication Type: Audio [Push-To-Talk, Voice Activated [VOX] Hands-Free]
    • Power Supply: 110 ~ 240 VDC 12V 1000mA
    • Power Consumption: 500mA
    • Speaker Output: Master: 70W
    • Microphone Sensitivity: 36-38db
    • Compatibility: Support ZDL-800 [Desktop Ext], ZDL-803 Head/Neck Band, ZDL-804 [Radio].
    • Ambient Temperature: -22°F ~ 122°F
    • Size: [H] 11.0″ X [W] 7.5″ X [T] 3.5