I wanted to share my experience and hopefully prevent any future incidents. I recently replaced my Uniden DB1 doorbells with a new 5MP models. The original Uniden DB1's had a resistor that was placed inline with the indoor chime and transformer. Newer doorbell cameras use a jumper. I didn't consider that prior to replacing the doorbell cameras with new and within minutes of connecting them my indoor chime unit (plastic) was ablaze sending smoke and soot throughout the dwelling and dropping burning plastic down the wall and to the floor.
PLEASE be warned to remove any resistors if in use for the supplied jumpers. My theory is that the resistors got hot and ignited the plastic internals of the indoor chime. This happened in less than 2 minutes of connecting the new outdoor unit.
This is a picture of the old unit that came with resistors to allow the indoor chime to operate. It came under a few brand names, Hikvision, Uniden, RCA, Nelly, etc...
PLEASE be warned to remove any resistors if in use for the supplied jumpers. My theory is that the resistors got hot and ignited the plastic internals of the indoor chime. This happened in less than 2 minutes of connecting the new outdoor unit.
This is a picture of the old unit that came with resistors to allow the indoor chime to operate. It came under a few brand names, Hikvision, Uniden, RCA, Nelly, etc...
