plastic case audio doorbell 4 wired intercom system kit

Specifications

audio intercom
Audio door phone for special design
1) Direct calling and dual talking
2)Unlock function

 

 

 

 plastic case audio doorbell 4 wired intercom system kit

Single house door phone applicable to conveniently identify a visitor
150 meters effective wiring with 0.8 mm cooper wire
Call sound output power is high 300mW across 8 ohms, and low 50mW across 80 ohms

 

  Audio Door Phone SystemFlush Mounting Easy wiring and installation 
Intercom System with Night Vision Function, Can Unlock the Outdoor During the Intercom 
Functions: 
With 2-8 indoor units 
Can call the indoor unit to make the intercom and unlock by the indoor unit 
Outdoor camera with IR-LED auxiliary for night vision 
Technology parameters: 
Power: DC 15V (supported by the indoor unit) 
Current: 
Static state: 20mA 
Dynamic state: 160mA 
Communication time limit: 75 seconds 
Working temperature: -40° C-+70° C 
Indoor unit 
Functions: 
Can unlock the outdoor during the intercom 
Can supply the power for the outdoor unit 
Technology parameters: 
Ring sound: Ding-dong, melody ring for optional 
Power: DC 18V 
Temperature: -10 to 55C 
Humidity: 45 to 95% 
Distortion: <5%