Functions
    - Duplex Intercom: it supports two-way intercom inside and outside the window.
- Auto-mute: it supports infrared detection function and can enter into mute mode automatically.
- Recording output: it supports headphone jack, and can output two-way sound signals inside and outside the window.
- Volume adjustment: it supports the sound inside and outside the window, and the volume can be adjusted.
- Power supply mode: DC12V / 0.2A
Technical Specifications
    | SD-2006DL+ | |
| Host speaker impedance power: | 8 Ω, 1.5W | 
| Extension speaker impedance power: | 8 Ω, 1.2W | 
| Output frequency: | 20Hz~20KHz | 
| Host microphone sensitivity: | – 51 ± 2dB | 
| Sensitivity of extension microphone: | – 44 ± 2dB | 
| Signal to noise ratio: | ≥ 90dB | 
| Harmonic distortion: | < 0.5% | 
| Working temperature: | – 20 ℃ ~ + 60 ℃ | 
| Working humidity: | 10% – 90% | 
| Host size: | 80x150x55mm | 
| Extension size: | ¢ 64x18mm | 
| Microphone length: | 360mm | 
| Packaging quantity: | 20 sets/carton. | 
Interface Connection
     intercom connection[/caption]
 intercom connection[/caption]



