Supports , P-25, D-Star and System Fully tested Onboard LED to show status (TX, , PTT, Mode) SMA antenna connector, antenna included Mounts on all current 's including the Pi Zero w /2W.WIDELY COMPATIBLE: Supports , P-25, D-Star and System WORK with RASBERRY Pi: Mounts on current including the Pi Zero w /2W Mode: Support both Duplex mode and mode Differencs in Duplex and :in Duplex mode,have 2 time slots, and Tx and can do at the same time Radio Frequency : in duplex mode,support uhf 430-440MHZ, in mode support both uhf 430-440MHz and vhf 140-150MHz Best adjusted: TX =0, =0,need no offset. Modem select: STM32-DVM/MMDVM_HS- Hat(GPIO) Antenna: on board two antennas :on board to show status, with status words on shell How to write WiFi detail into the Hotspot: 1: Generate WiFi config file, and plug it into TF card. We need a TF reader.Put TF card into this TF reader and plug this into computer. Go tohttp://.pistar.uk/wifi_builder.phpand then fill your WIFI name into the SSID, password into the , click submit. Then the file "wpa_supplicant.conf" is generated. Drag this file into your TF card's path. And plug the card into your hotspot. Power up your hotspot, and wait for 1-2minutes.Then we go tohttp://pi-starand play with the . keep this in mind that gadget only support 2.4 Gigahertz router, and it does not work with 5.8G router. Colour:White :plastic Package Contents: 1 x Duplex MMDVM hotspot board 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.