
| Nominal voltage | DC 12V |
| Working temperature | -20℃~70℃ |
| Working humidity | 10%~95% |
| Intercom mode | half duplex |
| Input impedance | 2.2KΩ |
| Application | It is suitable for bus, school bus, taxi and other vehicle monitoring scenarios |
| Sensitivity | -36±3DB,1K Hz |
| FREQ | 100~20000Hz |
| Built-in Microphone | yes |
| Built-in Speaker | yes |
| Output interface definition | 1-LINE OUT;2-LINE IN;3-DC12V;4-GND |
| Output interface type | 4Pin aviation head (female head) |