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PoE HAT for Raspberry Pi 4B/3B+, Power Over Ethernet (PoE) Support 802.3af, Compatible with Official Case, Supports Cooling Fan
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  • $49.99 
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PoE HAT for Raspberry Pi 4B/3B+, Power Over Ethernet (PoE) Support 802.3af PoE Network Standard, Compatible with Pi 4B / 3B+
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  • $54.12 
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PoE HAT for Raspberry Pi 4B, IEEE 802.3af-Compliant, 5V 2.5A Mini Power Over Ethernet Expansion Board for Raspberry Pi 4 B 3 B+
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  • $54.12 
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for Raspberry Pi 4 PoE HAT with Cooling Fan, Mini Power Over Ethernet Expansion Board for Raspberry Pi 4 B, 3 B+ and Rackmount
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  • $56.97 
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Galvanic Isolated Rail-Mount TTL to RS422 Converter, Anti-Surge, Multiple Isolation Protection Full Duplex Communication 3.3V - 5V
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  • $49.31 
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8-CH Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, with Various Isolation and Protection Circuits
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  • $128.99 
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