Specification: Model: Ultra2500 64CH VTX Input : DC 7-36V(2-8S Battery) Output: 5V@600mA(Power 5V to camera) Input impedance: 75惟 Protocol: IRC Tramp Antenna connector: MMCX connector Cable connector: GH1.25-6P connector Output power: 25mW/400mW/800mW/1500mW/2500mW/Pit mode Frequency tables: 64 CH Video format: PAL/NTSC Microphone: Built in microphone Size: 36.5mmx36.5mmx12mm Weight: 15g(without cable) Mounting holes: 30.5mmx30.5mm(M3) Features: 1. 64CH VTX super-power,suitable for Long Rang fligh with good stability. 2. Six power levels: 25mW/400mW/800mW/1500mW/2500mW/Pit mode. 3. Two-layer board cooling structure,separate power BEC and main-board,reducing and shielding from the insinal interference. 4. Temperature control protection function that can prevent high temperature burning. 5. Wide input, supports 7V-36V input. 6. VTX control protocol is IRC Tramp,supports OSD parameter adjustment. 7. VTX built in microphone,real-time return of Drone's sounds. 8. Has 3 regional frequency tables to meet the needs of various regions. 9. One function buttons, three indicator lights, easy to operate. 10. Mounting holes is 30.5mmx30.5mm. NOTE: For BetaFligh fligh controller firmware above BetaFligh 4.1.0,you need upload a VTX Table to the fligh controller before using the remote control to modify the video transmitter parameters normally. WARNING: 1. Install antenna before use. 2.To prevent overheating. provide constant airfiow and a well ventilated environment.Install a cooling fan if operating in confined conditions. 3. The 5V Output is just used for a Camera/Cooling Fan Don't connect Power Input /Battery to 5V Output port. Otherwise the VTX will be damaged. Pasckage included: 1 脳 Ultra 64CH VTX 1 x MMCX connector to SMA connector 82cm 1 脳 GH 1.25-6P connector cables 150mm