When i have both 4k devices monitor do i use rx or tx to get 4k 30hz clear view ? thanks

Tx or transmit is connected to your source and Rx or receive is connected to your display. Level of Category twisted pair will dictate if you can send 4K. I believe Cat6 is recommended for 4K. I’ve sent 1080p over Cat5e.

Is this all i need to get laptop screen to hd tv? thanks

You just need a HDMI cable to connect a laptop to a TV if your laptop has an HDMI output.

Can i use cat5 cable?

It won’t work for mine with cat5e. Run is about 120 feet

Can I run from tv to receiver for audio?

No, you'll need something with ARC support of your TV and Receiver has HDMI ARC ports: https://www.amazon.com/4K-HDMI-Extender-Balun-OREI/dp/B0877B75HH

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🚀 Elevate your workspace with flawless 4K streaming—because your visuals deserve the best!

PLUG PLAY CONVENIENCE - No drivers needed—just connect and go. Ideal for professionals demanding reliable AV extension in offices, meeting rooms, or creative spaces.
DUAL DISPLAY FLEXIBILITY - Local loop out lets you connect a display at the transmitter end while simultaneously outputting to the receiver end—perfect for multitasking environments.
EXTEND YOUR VISUAL REACH - Seamlessly transmit 4K UHD signals up to 130 feet and Full HD up to 230 feet over CAT6/7 cables for ultra-clear, lag-free viewing.
SIMPLIFY WITH POWER OVER CABLE - Eliminate clutter with POC technology—one power adapter powers both transmitter and receiver for effortless setup.
CRYSTAL CLEAR ZERO LOSS TRANSMISSION - Supports multiple HDMI resolutions including 4K@30Hz and Full HD with EDID management and premium audio formats like Dolby True HD and DTS HD.

The OREI EX-230C HDMI Over Ethernet Extender delivers high-speed, zero-loss HDMI transmission up to 230 feet using CAT6/7 cables. Featuring 4K@30Hz support, power over cable technology, and local loop out, it’s designed for seamless, clutter-free AV extension in professional and home environments.

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Manufacturer	Orei
Brand	OREI
Model	EX-230C
Item Weight	1 pounds
Product Dimensions	2 x 2 x 0.5 inches
Item model number	EX-230C
Manufacturer Part Number	EX-230C
Special Features	High Speed
Wattage	5 watts

OREI 4K HDMI Over Ethernet CAT6/CAT7 Extender, Extender RJ45 4K@30Hz Upto 130 Ft 1080P Upto 230 FT Full HD POC Transmitter & Receiver IR Loop Out (EX-230C)

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