Which of the following is a RF peer to peer mesh protocol used for lighting and other residential electronics？（）

A.The power supply is faulty and should be replaced.
B.The heat from a heating， ventilation， and air conditioning （HVAC） register is being received as infrared noise.
C.The radio frequency interference （RFI） is being received as noise.
D.A plasma display is emitting infrared noise.

A.Check that the sensor is not misaligned.
B.Clean the space between the sensor and the plate.
C.Toggle the tamper switch to reset the sensor.
D.Bypass the zone.

A.RJ-31x
B.RJ-11
C.RS-232
D.DB-9