The PL-AT-DR1-OEM is a PoE to LED driver. it is used in the PL-POE-Flood and PL-AF-Flood products. It accepts either passive POE, 802.,3af or 802.3at. The full specs are in the manual link above.
One question we hear is how to turn the LED on if there is no PIR is use. Simply connect the Signal input to the +5 pad on the PCB and the output will be on all the time. Note - if you are using a 802.3at and a 20 watt load, the inrush surge current could cause the PoE switch to turn the port off again. If this happens, then a delay is needed, in the manual - you see that we use a 180k ohm resistor with a 1 uF capacitor to create the delay we need. Connect the 1 uF from Signal to ground, and the 180k from signal to +5v.
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Click here for the complete PL-AT-DR1-OEM manual