1.Duplex MMDVM_HS_Hat: This PCB uses MMDVM_HS. It integrates two ADF7021 chips and supports dual-slot duplex operation in. 2.DMR mode: The default BER is less than 5%, and the default frequency deviation is 0. If the BER is higher than 5%, it can be corrected by adjusting the frequency deviation as long as the signal can be received 3.Supports DMR, P-25, D-Star and System Fusion (Fusion) protocols 4.Onboard LED indicators show status (Tx, Rx, PTT button, Mode) 5. output power can reach up to 10mW<br><br>Firmware is pre-loaded and can be easily updated through software Frequency range: UHF: 430-450 MHz, 433 MHz and 900 MHz VHF: 144 MHz, 220 MHz operating frequencies Color: As Shown Material: Metal<br><br>Package Contents: 1 x Hotspot Kit<br><br>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.