Manufacturer supply directly with two-year warranty and unlimited technical support,For passive PoE injector that is without detecting chip, welcome to send an email for confirmation. Support transmission rate of 10/100/1000Mbps, effective distance is 100meters(109yd),equiped standard DIN rail mounting bracket, after covered with waterproof case for outdoor use. PoE port 6KV surge protection, protect output against over voltage, over current, short circuit. Build-in detection chip inside,which will detect and classify device before powering, backward compatible with IEEE802.3af/at standard. Industrial-scale high power, boost PoE,wide temperature between -40? to 65?, allows 12-48Vdc input and solar application.