| 摘要 |
<p>An electrical switching apparatus for controlling a light 11 comprises a plurality of remote control devices 12 which can be actuated to transmit a wireless control signal to a control unit 10 mounted on or above the ceiling. The control unit 10 is arranged to change the state of the light 11 either when a conventional wall-mounted switch 18 or 19 is actuated or when a wireless control signal is received from one of the remote control devices 12. The apparatus thus enables the light 11 to be turned on or off from a further point, without the need to run additional wires down a wall to an additional switch. Each remote control device 12 can transmit a control signal to remotely put the control unit 10 into an ERASE mode, whereupon the address codes of all remote control devices 12 are erased from its memory, with the exception of the address code of the control device 12 which gave the command to the control unit to enter the ERASE mode. In this manner, the control unit 10 can be re-configured remotely to respond solely to the control device 12 which gave the command to the control unit. Each remote control device 12 may comprise a switch assembly resembling a conventional wall switch, having actuators 43,43' (Figure 4), which are actuable from either opposite side of the assembly. Thus, such a remote control device 12 can be mounted in a partition wall and the light can be controlled from either side of the wall.</p> |
