Introduction :
When comer presses the doorway camera (transmitter), the indoors monitor (receiver) will automatically turn on with "DINGDONG" sound. At the same time, the house-owner/user can see clear image of the comer on the receiver and talk to the comer. The system can automatically turn off 10 seconds after interlocution is stopped. If the comer and user don’t talk to each other, the system will automatically turn off 25 seconds after the doorbell button is pressed.
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