Abstract: Disclosed are a water cooling plate and a water cooling radiator having the same. The water cooling plate includes a main body and a water chamber disposed inside the main body, the water chamber has provided therein a pressure bag, the pressure bag has one end sealed through a sealing plug to form a sealed chamber therein. The water cooling radiator includes a water cooling plate and a water block connected to the water cooling plate. Cooling water inside the water cooling plate is pumped, through a water pump, into the water block to absorb heat, and the heated water is returned to the water cooling plate via a water inlet pipe.

Abstract: Lighting units (22) in a room (20) are controlled automatically and remotely in response to motion sensor modules (26) located to cover the area of the room (20). A sensor module (26) detecting movement transmits a radio signal to a controller module (28), which then transmits a corresponding control signal to the responder modules (24), causing them to switch their associated lighting units on and then increase their brightness to a preset level. The system includes an emergency lighting responder module (32) to switch on emergency lighting (34) if mains power fails and is also responsive to ambient light level. Each of the controller module (28), the sensor modules (26) and the responder modules (24) include a radio transceiver and all control and management signals are transmitted from location to location by radio. Other sensor modules (responsive to different variables) and responder modules may be added to build up a wireless building management system.