Standard PoE power supply refers to a power supply that complies with PoE industry standards (such as IEEE802.3af, IEEE802.3at or the latest IEEE802.3bt standard). Under the PoE industry standard of 802.3af, 802.3at or 802.3bt, the PoE power supply equipment (PSE) and the powered device will automatically negotiate when they are connected, and the negotiation can be successful only when the devices at both ends conform to the same standard mode. After the negotiation between the two devices is successful, the power supply device will supply power to the powered device. In this working mode of standard PoE technology, the safety of PoE equipment can be strongly guaranteed. Generally, the 802.3af, 802.3at or 802.3bt standard power supply voltage is 44-57V (DC).
Non-standard PoE power supplies generally refer to power supplies that do not comply with any PoE industry standards (such as IEEE802.3af, IEEE802.3at or IEEE802.3bt standards). The operating voltage of non-standard PoE equipment is generally 18-48V (DC). If the voltage values of the two connected devices do not match, it may cause permanent damage to the device.
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