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Waterproof 12V to 5V Converter DC-DC Step Down Module Power Adapter USB-A Female/Type C/dual USB/open Wire Connector

10G SFP+ Module Multi-Mode SR Duplex LC Gigabit 850nm 300m Fiber SFP Transceiver Module Compatible for Cisco/Mikrotik Switch

PWM Motor Speed Controller DC 6-60V with Encoder Knob Adjustable Frequency Driver Module for Industrial Motors CNC Machine

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Wifi Smart Home Module Relay Switch 2CH AC DC 220V 7-32V Remote Control 433Receiver Works with Tuya Smartlife Alexa Google Home