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20 up a level. They take and add PoE gateways, lighting control sensors, and advanced network-managed software systems to provide a total environment that adds significant feedback and control to the system. This enhancement makes the light themselves human-centric and capable of being controlled based on data, analysis, and decision criteria of the network user. LED Lights/Mechanicals/Electronics/Connections LED manufacturers are constantly improving LEDs by increasing their efficacy (lm/W) and reducing the cost per lumen ($/lm). Examples of LED manufacturers that provide excellent products for light fixture manufacturers abound. LEDs can deliver low system cost through high lumen density, reliability, and color consistency. Improvements in lumen density, voltage characteristics, reliability, and optical performance are always taking place. High-power, multi-die emitters, enabling cost-effective, high-reliability fixtures for High Bay and Outdoor applications are often employed. LEDs in these configurations may provide up to 150lm/W efficacy. LEDs with Correlated Color Temperature (CCT) of 2700K to 6500K are often utilized. Additionally, surge protectors are employed to provide an electronic shunt path when an LED in an LED string fails as an open circuit. Connectors offer easy wire removal, low wire insertion, and high wire retention forces for thin LED lighting-module applications. LED drivers with monolithic switching regulators may get used in high-brightness LED lighting applications where efficiency, high bandwidth, PWM and analog dimming are important. Drivers that offer excellent efficiency, ease-of-use and EMI performance at an attractive cost make sense for a variety of connected intelligent LED lighting networks. LED cable harnesses are not yet standard as a means of connecting smart LED drivers to provide the low voltage power distribution and data communication necessary to control LED lighting fixtures, sensors, and actuators. One should design and employ connectors that are proven in their reliability, durability, and ease of use. Smart LED Drivers Intelligent LED drivers supply the appropriate power and conditioning signals for the LED engine. After receiving control data and power from the PoE gateway, the LED driver can respond to information and drive tasks based upon a coordinated design, control, and management system emanating from the connected network. At present, they are available in single- channel, or dual-channel configurations capable of driving LED lighting fixtures with constant currents at output voltages of 12VDC-42VDC and a maximum output power of 45W. They can be daisy-chained together so that that up to eight devices can be driven from a single PoE gateway. • PoE PD Interface with DCDC Converter • 78% efficiency with 350 to 350kHz switching frequency range • 5x5mm package size Digi ® XBee ™ Cellular LTE Cat 1 Si3404 POWER OVER ETHERNET (PoE) DEVICE LEARN MORE 4