Subtone scanning >K On the basis of known channel frequency point, press PTT + side key 1 to start up and bright yellow and green light prompt to enter code measurement mode. When receiving effective carrier wave, start scanning subtone, and enter when scanning Enter and receive, press PTT to save, and the current channel scanning ends

Special signaling >K Besides standard analog subtone (QT) and digital subtone (DQT), this interphone can also be equipped with non-standard QT/DQT and frequency hopping subtone Side key selection >K Side key 1 and side key 2 can select the following functions in computer programming software (monitoring/scanning/high and low power switching/alarm function/priority channel)
Voice control function >K Voice control transmission function can be set in the frequency writing software. Users can speak and transmit at the receiver without pressing the "PTT" transmission switch

Scanning function >K When more than 1 channel is added to channel scanning, side key 1 selects scanning definition, press scanning to start scanning, interphone enters channel scanning, press scanning key again, "drip" twice, then exit scanning
CHANNEL switch >K Rotate this switch to select channel 1 — 16, counterclockwise to reduce channel value, clockwise to increase channel value. If the channel rotates to the channel designated empty by write frequency software, alarm sound will be sounded. 
Status indicator >K Light red light in transmission (transmission) and green light in reception.

POWER SwitchLUME Controller >KTurn on the interphone power when turning clockwise, turn counter clock wise until the click sound starts when turning, and adjust the call volume when turning. 
Professional Two-Way Radio Manufacturer 

Familiar with this machine 
Antenna Rubber antenna for receiving and transmitting signals 
Transceiver status indicator Launch a bright red light Receive green light 
Loudspeaker Output sound 
PTT launch button Press the right microphone Talk to other walkie-talkies 

Channel selector 
Choose Channel 1 to Channel 16 
Power switch/volume controller Turn clockwise to turn on the interphone power and turn counterclockwise to turn off the interphone power 
Microphone Input sound 

Side key 1 (available on software Make function selection) 
Speaker/ microphone jack 
Side key 2 (available on software Make function selection) 
Unpacking and inspection device Please carefully remove the walkie-talkie from the packing box. We recommend that you confirm whether the packaging contains the items listed in the following table before discarding the packaging materials. If any item is lost or damaged during delivery, please contact the dealer immediately. 
Carrying accessories 

Battery pack (1) Charger (1) Antenna (1) Belt clip (1) 
Native description Low power reminder >K Low power warning reminds when the battery needs to be charged or replaced )K When the power is insufficient, the machine has a voice prompt of "please charge", please change the battery pack or charge the machine 
Opening and closing of voice number reporting function )K This machine has the function of voice number reporting, which is convenient for you to quickly know the current channel of your interphone when operating at night or in the dark. This function can be realized by writing frequency by computer programming software. The dense transmission prompt tone can be set by writing frequency software, and the start transmission prompt tone/end transmission prompt tone can be set or both can be turned on at the same time