The HERCULES X4 Drone uses FrSky Tandem X20S as the main remote controller. The operation frequency of the Remote Control is 868GHz for EU and 2.4GHz for FCC.
Figure *. Remote Control Hercules X4 Drone
Part Number X20S SW version 1.3.80 HW version 1.4.0 FW version 2.2.4
Remote Control Characteristics
PARAMETER VALUE Dimensions 212200 95 mm (LW H) Weight 809g (without battery) Operating system ETHOS Operating range Up to 50 to 100KM Operating latency Down to 4ms end-to-end latency Internal RF module TANDEM Number of channels Up to 24 channels Operating Voltage Range 6.5 ~ 8.4V (2S Li-battery) Operating Temperature -10°C ~ 60°C (14°F~140°F) Operating Current 240mA @ 7.4V (typ.) Charging Current ≤1A ±200mA USB adaptor Voltage 5V+0.2V USB adaptor Current >2.0A Backlit touchable LCD resolution 800x480