Description: Through the T124B hotspot box, ordinary digital walkie-talkies can realize the interconnection nationwide, thus solving the limitation of ordinary digital walkie-talkie communication distance. The motherboard adopts components and temperature compensated crystal oscillator. When running for a long time, its performance remains stable, and the bit error rate is low. The wiring of this board has been optimized, the component layout is more perfect, the heat generation is small, and the heat dissipation speed is fast, so it is suitable for long-term operation For DMR, duplex board have the advantage of TDMA. All debugging parameters are based on the DMR standard to carefully debug each board, the calibrated DMR standard be more stable in use, and the sound quality restoration be greatly improved. As for other standards, users can realize the same stability in DMR, D-Star, (C4FM), P25, NXDN and POCSAG modes as long as they are slightly trimmed! Specifications: Frequency: U band (420.000-434.900MHz/438.100-470.000MHz) Supported modes: DMR, D-Star, (C4FM), P25, NXDN, and POCSAG Power: 20mW Shell material: acrylic Screen: 3.5-inch color screen External power supply mode: MINI port (for Android) 5V 2A (power supply is not included) Cooling method: built-in fan Duplex T124B model configuration: 4B + duplex blue board + 16G system card + external antenna + 3.5-inch color screen! Note: The power supply is not included. (Different batches may have different appearance, which does not affect use) Material: PCB+electronic components+acrylic colour: Black Package Contents: 1 x Hotspot box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.