Feature: 1. MMDVM HS PCB Board: This PCB uses MMDVM HS, has two ADF7021 on board and allows duplex operation with two time slots for DMR 2. High Performance 32bit Processor: The module adopts high performance 32bit ARM processor and supports for DMR, P 25, D Star and system fusion 3. Fully Assembly: The board is fully assembled and tested, can fit neatly for Raspberry Pis all model, equipped with SMA antenna connector and UHF, VHF antenna, the RF power is up to 10mW 4. Firmware Pre Installed: The firmware is pre installed, easy to upgrade via software, integrated LED show status, has Tx, Rx, PTT mode, supports PI STAR test 5. Multi Mode: The frequency for UHF is 433 and 900 MHz, for FM is 144 and 220 MHz, this board supports UHF and UHF, UHF and VHF, VHF and UHF modes Specification: Item Type: MMDVM HS Hotspot Board Material: ABS PCB Color: Green. Package List: 1 x MMDVM HS Hotspot Board2 x 433MHz Antenna2 x Pin Header2 x SMA Antenna Connector Note: 1. Hardware version 1.0, software version 1.5.2.2. No case.3. Not include for Raspberry Pi.4. The firmware is preloaded, please do not upgrade the firmware by yourself.