High/low power switching
Press and hold the MONI button on the radio side to switch the power of the selected channel.
In the waiting state, press the MONI button on the radio side for a long time to monitor the signals of the specified channel and the selected channel. Whether the signal of the specified channel or the signal of the selected channel is detected by whether the green light is always on or off.
ET-90 can perform signal scanning on a group channel or a full channel. Whilegreen light flashes quickly.
Press the MONI button twice in rapid succession to activate the alarm function. The alarm function has an on-site alarm, an alarm tone is sent, and an alarm code is issued (selected by software).
Li-lon 2800mAH battery