Surecom SR-328 Two Way Duplex Repeater Controller with Radio Range Extender for Walkie Talkie Introduction: The Surecom SR-328 is a compact and cost-effective duplex repeater controller designed to extend the communication range of two-way radios. It connects two handheld or mobile radios to create a bi-directional repeater system, making it ideal for expanding coverage in larger work areas, remote locations, or emergency setups. With its improved internal structure and sleek exterior design, the SR-328 offers reliable performance and easy setup. It supports real-time duplex communication and includes user-friendly features such as LED status indicators, remote DTMF control, and a built-in rechargeable battery. Key Features: 1. Real-Time Duplex Repeater Function Connects two radios as a full-duplex repeater, significantly extending communication range. 2. Plug-and-Play Setup Simple configuration—no advanced programming required. 3. DTMF Remote Control with Password Protection Turn repeater functions ON/OFF remotely and securely via radio using DTMF tones. 4. Built-in Rechargeable Battery Operates for 72 hours on the internal Li-ion battery or via an external DC 5V–24V power source. 5. Multi-LED Display Shows the radio connection status and battery level at a glance. 6. Compatible with Most Popular Two-Way Radios Includes dual 46-K cables for Kenwood 2-pin radios and compatible models. Specifications: 1. Duplex repeater controller for handheld or mobile radios 2. Dual audio input/output ports 3. Built-in 3.7V Li-ion rechargeable battery 4. Power input: DC 5V–24V 5. Battery life: Up to 72 hours (on a full charge) 6. Remote ON/OFF control via DTMF 7. Multi-LED indicators for system status 8. Low power consumption for long-term operation Package includes: SR328 Duplex Repeater Controller*1 USB Power Cable*1 Power Supply Plug*1 46-K for Kenwood*2 User Manual*1