Abstract: A system to verify the identity of modules within a stack light is disclosed. A sensor is mounted to a circuit board inserted within a housing of the module, and a target is mounted to or integrally formed in the housing. The sensor detects and generates a signal corresponding to the detected target. Different targets or locations for the target are provided for each housing. The module, a base for the stack light, or a remote controller in communication with the stack light identifies the housing in which the circuit board is mounted based on the feedback signal generated by detecting the target. At power-up, a routine may initiate a verification routine by which each module in the stack light determines the type of housing in which the circuit board for that module is located.

Abstract: A system to verify the identity of modules within a stack light is disclosed. A sensor is mounted to a circuit board inserted within a housing of the module, and a target is mounted to or integrally formed in the housing. The sensor detects and generates a signal corresponding to the detected target. Different targets or locations for the target are provided for each housing. The module, a base for the stack light, or a remote controller in communication with the stack light identifies the housing in which the circuit board is mounted based on the feedback signal generated by detecting the target. At power-up, a routine may initiate a verification routine by which each module in the stack light determines the type of housing in which the circuit board for that module is located.

Abstract: An in-line sound module for a modular stack light system provides electrical and mechanical connectors to allow it to be placed anywhere in the stack. Axial orientation of the audio transducer and a flexible jumpering system allow preservation of central connectors between modules. In-line configuration permits multiple sound modules to be used in a stack light and to be teamed with different beacon modules. In one embodiment the in-line sound module may also include lamps to provide beacon functionality.

Abstract: An in-line sound module for a modular stack light system provides electrical and mechanical connectors to allow it to be placed anywhere in the stack. Axial orientation of the audio transducer and a flexible jumpering system allow preservation of central connectors between modules. In-line configuration permits multiple sound modules to be used in a stack light and to be teamed with different beacon modules. In one embodiment the in-line sound module may also include lamps to provide beacon functionality.

Abstract: An in-line sound module for a modular stack light system provides electrical and mechanical connectors to allow it to be placed anywhere in the stack. Axial orientation of the audio transducer and a flexible jumpering system allow preservation of central connectors between modules. In-line configuration permits multiple sound modules to be used in a stack light and to be teamed with different beacon modules. In one embodiment the in-line sound module may also include lamps to provide beacon functionality.

Abstract: An in-line sound module for a modular stack light system provides electrical and mechanical connectors to allow it to be placed anywhere in the stack. Axial orientation of the audio transducer and a flexible jumpering system allow preservation of central connectors between modules. In-line configuration permits multiple sound modules to be used in a stack light and to be teamed with different beacon modules. In one embodiment the in-line sound module may also include lamps to provide beacon functionality.

Abstract: An in-line sound module for a modular stack light system provides electrical and mechanical connectors to allow it to be placed anywhere in the stack. Axial orientation of the audio transducer and a flexible jumpering system allow preservation of central connectors between modules. In-line configuration permits multiple sound modules to be used in a stack light and to be teamed with different beacon modules. In one embodiment the in-line sound module may also include lamps to provide beacon functionality.

Abstract: An in-line sound module for a modular stack light system provides electrical and mechanical connectors to allow it to be placed anywhere in the stack. Axial orientation of the audio transducer and a flexible jumpering system allow preservation of central connectors between modules. In-line configuration permits multiple sound modules to be used in a stack light and to be teamed with different beacon modules. In one embodiment the in-line sound module may also include lamps to provide beacon functionality.

Abstract: A power converter is introduced into a stack light in the form of a compatible modular element that fits between the base and a light module. By converting multiple input voltages to a common core voltage in a module distinct from the base and light modules, proliferation of different varieties of base modules and light modules may be reduced without impact on customer selection.

Abstract: A function generator is introduced into a stack light in the form of a compatible modular element that fits between the base and a light module. By centralizing the operation of the function generator, fewer components must be separately stocked and a cost savings may be realized through the centralized function generator.

Abstract: A hot water dispensing system comprises a one-piece plastic tank having a main heating chamber, an expansion chamber, and an air collection chamber. The air collection chamber is disposed generally below the expansion chamber and alongside the main heating chamber. The main heating chamber is in fluid communication with the expansion chamber and the air collection chamber. The hot water dispensing system also includes a temperature control system having a heating element, a metal temperature sensing bracket, and a thermostat. The heating element is disposed within the plastic tank and connected to a metal temperature sensing bracket disposed outside the tank. The excellent conductive properties of a metal sheath that connects the metal temperature sensing bracket to the heating element allow the metal temperature sensing bracket to simulate changes in the temperature of water in the tank.