Power Upgrade! The Next-Gen Digital Walkie-Talkie Module Delivers Big Performance in a Compact Size

The DMR818S-5W is our latest high-performance 5W long-range digital walkie-talkie module. It features a highly integrated design, combining a microcontroller, digital voice chip, and RF power amplifier circuit. The module not only fully supports mainstream analog walkie-talkie modes on the market but also offers digital communication capabilities. Equipped with a standard serial interface, users can easily configure key parameters such as transmit/receive frequencies and contact lists via simple serial commands, greatly streamlining the setup process. Thanks to its compact form factor and high level of integration, users only need to connect basic peripheral components such as an audio amplifier, microphone, and speaker to quickly build a fully functional compact digital walkie-talkie.

Compared to the DMR818S module, the DMR818S-5W boosts the transmit power to 5W while maintaining the same package size and pin layout, significantly enhancing communication range and coverage. This provides strong support for various long-distance communication needs. In addition, the module is manufactured and tested in strict accordance with lead-free processes and complies fully with international environmental standards such as RoHS and REACH, ensuring safe and worry-free use.

Product Advantages
Compact Size with High Power: The module features a compact design while maintaining the same dimensions and pin configuration as the DMR818S, yet delivers up to 5W of transmit power. This significantly improves communication range and coverage, making it suitable for various complex environments.

Dual-Slot Independent Transmit and Receive: Supports dual-slot technology with independently configurable transmit and receive frequencies, enhancing communication efficiency, reducing interference, and ensuring clear and smooth calls.

Stable and Highly Compatible: Built with a 0.5PPM TCXO crystal oscillator for high frequency stability and low bit error rate. It is compatible with analog walkie-talkie modes and supports seamless switching between digital and analog modes, meeting diverse communication needs.

Features of DMR Walkie Talkie Module DMR818S-5W

· UHF band frequency: 400~470 MHz
  VHF band frequency: 134~174 MHz
  350 band frequency: 320~400 MHz

· Distance up to 7Km

· Max power output to 5W, low power to 2W

· High Sensitivity: -122dBm

· Bit error rate down to 5% under -117dBm

· Independent frequency for Tx and Rx.

· 9 adjustable volume

· Analog Bandwidth: 12.5 / 25 KHz    Digital Bandwidth:6.25KHz

· Message transmission and reception

· DMR(Digital Mobile Radio)/ Analog walkie talkie

· Built-in EEPROM, data saved even powered off

· 1ppm TCXO crystal

· 51 CTCSS

· 166 CDCSS

Applications of DMR Walkie Talkie Module DMR818S-5W

· DMR walkie talkie module

· Invisible intercom system

· Building security system

· Audio surveillance system

DMR Mode of DMR Walkie Talkie Module DMR818S-5W

· Message transmission and reception.

· Enhanced encryption of Voice and Text message.

· Various voice call types: All call, Group call and Private call;

· Reminder for input calling, calling status checking

· Emergency alarm and radio monitor;

· Repeater

Analog Mode of DMR Walkie Talkie Module DMR818S-5W

· CTCSS/CDCSS configurable

· Squelch levels configurable

Electrical Characteristics