Xreal needs to update the latest firmware(if P3 S works with Xreal:) 

https://www.xreal.cn/nrealapp

Model Number: P3 

PeakDo Wireless HDMI Transmitter and Receiver 100ft/30m (Series 3)

Wireless HDMI HD 0 Latency Transmission 30m

mmWave Wireless HDMI Transmission Range 100ft

Ditch the HDMI Cable and No need for WiFi, PeakDo mm-wave wireless HDMI transmitter-receiver streams 1080P movie, TV, and video, transmitted from your laptop, PC, phone, gaming console, camera to HDTV, projector, and monitor, up to 100ft. Bring HDTV home, office, or outside. 

Uncompressed HD Video and Digital Audio

Smooth display without any network latency (real-time response). Wireless Transmitter sends uncompressed 1080P video and digital audio to your TV or projector up to 100 ft. Ideal for movies, gaming, fitness, and meeting at home or the office.

>No WIFI Required and Portable for Trip

Perfect video transmission system for HD video (1080P, no compression) in 30 m. The ultra-wide transmission bandwidth ensures signal stability and video/audio synchronization.

1080P@60Hz 0 Latency for Live and Gaming

The stable signal and ultra-fast transmission speed enable you to enjoy clear pictures and sound with 0 Latency anywhere: Live Football without delay, Synchronized gaming, and efficient meetings.

Compact in Size and Light in Weight

Eliminates the limitation of WiFi. This wireless HDMI extender can transmit high-definition video even outdoors with ease. Just place the projector or monitor within 100FT of the transmitter, and you can enjoy HDTV at camping, at outdoor parties, or shooting outside.