MATEK VIDEO TRANSMITTER 5.8G VTX-HV W/ BFCMS CONTROL 40CH, 25/200/500mw switchable, 6~27V Input, Traditional button+LED control, BFCMS control via FC Uart_TX, Stack mounting. Matek make some of the best racing drone flight controllers and now they are expanding their product range with this video transmitter. The Matek VTX-HV is excellent value for money and is the perfect partner to their F405 OSD / AOI Flight Controller as it stacks on top to give you a fully functional FPV racing stack. The unit has 40 standard channels and is switchable between 25, 200 and 500mW. Best still, the VTX connects directly to Betaflight allowing you to configure the VTX power and channel via your radio and an OSD menu. The Matek VTX includes a lightweight UFL / MMCX (select as required) pigtail connector and also an SMA connector for regular FPV antennas. The unit supports a wide input voltage from 2 to 6S (7~27V) and has a 5V/1A BEC output to power a camera or the FC. It also utilizes the standard 30.5mm mountings, which allows it to stack with other units on the market. Frequency Table: Boscam A (A) 5865/5845/5825/5805/5785/5765/5745/5725 Boscam B (B) 5733/5752/5771/5790/5809/5828/5847/5866 Boscam E (E) 5705/5685/5665/5645/5885/5905/5925/5945 Fatshark    (F) 5740/5760/5780/5800/5820/5840/5860/5880 Raceband (R) 5658/5695/5732/5769/5806/5843/5880/5917 Features: Connects directly to Betaflight letting you configure VTX power and channel via your radio at the field via OSD menus Wide input voltage (7~27V) 40 standard channels Output power is switchable (25, 200 and 500mW) 5V/1A BEC output or Camera or FC Traditional button and LED control BFOSD and LUA Script compatible Firmware upgradeable Stackable with standard 30.5mm mounts