Abstract: An appliance control circuit has an occupancy sensor, a control signal receiver, a control signal transmitter, a control element, and a power supply. In operation, when the occupancy sensor senses an occupant, the occupancy sensor outputs a signal to cause the control element 9 to control power from the source of power to the appliance. Similarly, when a control signal is received by the control signal receiver the receiver outputs a signal to cause the control element to control power from the source of power to the appliance. At the same time, the control signal transmitter is activated based on the signal from the occupancy sensor. Multiple control circuits can be used to control one another. The appliance could be for example a light, a thermostat, or a camera.

Abstract: An appliance control circuit has an occupancy sensor, a control signal receiver, a control signal transmitter, a control element, and a power supply. In operation, when the occupancy sensor senses an occupant, the occupancy sensor outputs a signal to cause the control element 9 to control power from the source of power to the appliance. Similarly, when a control signal is received by the control signal receiver the receiver outputs a signal to cause the control element to control power from the source of power to the appliance. At the same time, the control signal transmitter is activated based on the signal from the occupancy sensor. Multiple control circuits can be used to control one another. The appliance could be for example a light, a thermostat, or a camera.

Abstract: A burner apparatus and method for reducing nitrogen oxides that are formed during combustion of gaseous fuel. Primary gaseous fuel and excess oxidant are premixed to form a fuel/oxidant mixture which is introduced into and combusted within a primary combustion zone. Primary combustion products are introduced into a secondary combustion zone. Secondary gaseous fuel is also introduced into the secondary combustion zone and is preferably mixed with the primary combustion products. The mixture of secondary gaseous fuel and primary combustion products is combusted in a secondary combustion zone. A portion of the secondary combustion products are internally recirculated into the secondary combustion zone. The overall combustion products can be externally recirculated and introduced into the primary combustion zone. A portion of the fuel/oxidant mixture, with or without the recirculated overall combustion products, can be bypassed around the primary combustion zone and introduced into the secondary combustion zone.

Abstract: A burner apparatus and method for reducing nitrogen oxides that are formed during combustion of gaseous fuel. Primary gaseous fuel and excess oxidant are premixed to form a fuel/oxidant mixture which is introduced into and combusted within a primary combustion zone. Primary combustion products are introduced into a secondary combustion zone. Secondary gaseous fuel is also introduced into the secondary combustion zone and is preferably mixed with the primary combustion products. The mixture of secondary gaseous fuel and primary combustion products is combusted in a secondary combustion zone. A portion of the secondary combustion products are internally recirculated into the secondary combustion zone. The overall combustion products can be externally recirculated and introduced into the primary combustion zone. A portion of the fuel/oxidant mixture, with or without the recirculated overall combustion products, can be bypassed around the primary combustion zone and introduced into the secondary combustion zone.