Maintenance and cleaning
Do not directly lift the antenna or external microphone;
Use a lint-free cloth to wipe dirt on the interphone to prevent poor contact;
When the interphone is not in use, please cover the earphone jack;
After long-term use, the buttons, control knobs, and case are easily dirty. You can use neutral detergents (do not use strong corrosive chemicals)
and wet clothes for cleaning.
Technical indicators
Whole machine part
Frequency range
400-470MHz
Rated voltage
DC3.7V
Use temperature range
-20
℃
-+70
℃
Group frequency
Phase-locked loop frequency synthesis
Memory channel
16 channels
Antenna configuration
Rubber antenna
Antenna resistance
50Ω
Working mode
same-frequency simplex or different-frequency simplex
Grounding
negative electrode
Dimensions
145
×
71
×
18mm(excluding antenna)
Weight
About 200g(including antenna)
Emission part
value
Receipt part
value
Output power
0.5/2 W
Sensitivity
＜
0.20uV
（
12dB SINAD
）
Modulation
FM
（
F3E
）
Quieting sensitivity
＜
0.20uV
Maximum frequency
deviation
≤
2.5KHz
Intermodulation interference
resistance
；
50dB
Sparious radiation
＜
-60dB
Audio power
≥
500mW
Pre-emphasis character
6dB
Current receipt
≤
350mA
Emission current
600mA
Squelch waiting
≤
20mA
