Abstract: A picture frame or a doorbell having warning function includes a main body consisting of a front housing, a rear housing and a transparent plate for placing photos or pictures. The main body is provided with a sensor hole, a speaker, an electronic control circuit and/or an emission circuit to deliver signals to a receive circuit of a subsidiary device positioned at any location in a house (in different rooms or on different stories). When the sensor of the main electronic control circuit senses any unusual light sources, the speaker of the main device can send out warning sounds, and the signals will be delivered to the receive circuit of the subsidiary device through the emission circuit to let the speaker of the subsidiary device give out warning sounds at the same time.

Abstract: A picture frame or a doorbell having warning function includes a main body consisting of a front housing, a rear housing and a transparent plate for placing photos or pictures. The main body is provided with a sensor hole, a speaker, an electronic control circuit and/or an emission circuit to deliver signals to a receive circuit of a subsidiary device positioned at any location in a house (in different rooms or on different stories). When the sensor of the main electronic control circuit senses any unusual light sources, the speaker of the main device can send out warning sounds, and the signals will be delivered to the receive circuit of the subsidiary device through the emission circuit to let the speaker of the subsidiary device give out warning sounds at the same time.