The Alpha TTU-4-MRA Inmate/Visitor Intercom offers a reliable voice communication solution ideal for low ambient noise environments. With its half-duplex VOX operation, it enables natural conversations without the need for pushbuttons. This intercom is designed for easy installation and maximum security, featuring a low-profile and tamper-resistant build that fits seamlessly into any setting.
Alpha TTU-4-MRA Communication Features
- Clear, 2-way hands-free voice communication: Enjoy natural conversations with half-duplex VOX technology that eliminates the need for shouting or repetition.
- Quality electronic design and engineering: Ensures reliable performance and durability in demanding environments.
- Avoid shouting, repetition, misunderstanding: Facilitates smooth interactions, enhancing communication clarity.
- No gooseneck microphone and no external controls: Promotes a clean aesthetic and user-friendly experience.
- Rugged, tamper-resistant materials: Provides peace of mind in high-security applications.
- Simple, one-person installation: Saves time and effort with no need for cutting into barriers.
- Compact, contemporary design: Blends with any decor, maintaining a professional appearance.
Detailed Specifications for Alpha TTU-4-MRA
| Model | TTU-4-MRA |
| Power Supply | 15VDC |
| Operation Mode | Half-duplex (VOX) |
| Installation Type | Counter-mounted |
| Microphone Type | Built-in, no gooseneck |
| Material | Tamper-resistant |
| Dimensions | Compact, low-profile design |



















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