1. Main interface long press OK key to lock/unlock the manual channel, short press to enter the menu; unlocked case, press _ up, down, left and right to adjust the frequency 2.The menu interface is divided into three pieces of content:Scan, Settings, About. Press up and down to switch menu options, OK to enter the sub-menu, left button to return to the main interface 3.Scan menu has three subcontents. Graph Scan displays the signal strength of frequency 5300-5900 MHz. Table scan display will chart channel signal strength by different colors, the end of the scan, frequency switch to the most current channel with the best signal strength, and displayed in the upper right corner. Calibration is used to calibrate the rssi. Failure to turn on the map transmission will cause the calibration to fail, and success will save the result. 4. Settings interface can set the display backlight intensity, power-on animation, whether the buzzer is on. 5.Firmware can be upgraded through TYPE-C USB interface Product Specifications: Adaptation: for Fatshark Dominator V1, V2, V3, HD1, HD2, HD3, HDO, HDO2 FPV Glasses for Skyzone 04L,04X FPV Glasses for DJI V1 V2 FPV Glasses Hardware: ESP32 microcontroller + 0.96 inch TFTLCD + 5-way Pushbutton + RF homologation-98dbm receiver module + buzzer Interface: LVGL based bilingual interface Frequency: 5.8G 48 frequencies (A,B,E,F,R,L) Power supply: 5V@450mA Weight: 22.5g Dimensions:L42.4mmxW25.8mmxH20.5mm Upgrade points: 1. Smaller size, easier to install 2. Support USB direct firmware upgrade NOTE: Cables in pictures are not included Specifications: Inner Hole Colour:Black Material:PCB+Electronic Components Package Contents: 1x ESP32 RX5808 5.8G PLUS Dual Antenna Receiver Module