Patent ID: 8294576

Claim:
An infrared sensor switch, comprising an infrared sensor with a detection range, a controller that comprises the sensor for detecting whether or not a person is present in the detection range and controls an ON or OFF state of a corresponding load unit based on each detection result obtained from the sensor; wherein the switch further comprises: a sensor block comprising the sensor; and a housing that is mounted in a wall and retains the sensor block so that a center of the detection range can be rotated about a horizontal axis up to at least 40 degrees downward from a forward direction of 0 degrees, wherein the switch further comprises: an address storage that stores an address related to the corresponding load unit; and a transmitter that transmits a multiplexed transmission signal to the corresponding load unit through a main control unit, the main control unit transmitting the transmission signal based on a relationship between the address stored in the storage and the address related to the corresponding load unit based on the specified multiplexing; wherein the corresponding load unit comprises: at least one load; a receiver for receiving a multiplexed transmission signal from the main control unit; and a controller that, when a transmission signal including the address assigned to the load unit is received by the receiver, controls an ON or OFF state of said at least one load in accordance with a corresponding ON or OFF control code included in the transmission signal, respectively; wherein the controller of the infrared sensor switch transmits a transmission signal including an ON or OFF control code to the corresponding load unit through the main control unit by generating a transmission signal, this transmission signal being generated based on a detection result obtained from the sensor, and including monitor data corresponding to an ON or OFF control code as well as the address stored in the storage, and being transmitted to the main control unit through the transmitter.