Let me know which option works best for you.
According to the manual, the process was delicate. “Connect the male SMA connector to the port labeled ‘RF OUT’. Ensure the impedance matches 50 Ohms. Navigate to Menu > Settings > Calibration. Press and hold the rotary encoder for three seconds until the screen flashes amber.” aodelan wtr2 user manual
Operates as a 2.4GHz wireless remote (with a range up to 80m/262ft) or as a wired shutter release. [1, 3] Multi-Exposure Modes: Let me know which option works best for you