The normal can be 250-300 feet. Also improve the signal-to-noise ratio of the dynamic range so that the system has the best anti-interference to show the perfect original sound again. UHF WIRELESS IN EAR MONITOR SYSTEM: UHF band phase lock PLL, improved comprehensive performance, anti-frequency drop, anti-series frequency.
eBay
Professional Wireless In-ear Monitoring System 2/4/6/8 Channel Multi-bodypack Monitor, Band Stage Outdoor in-ear monitor SM-2050
Aliexpress UK
It is ideal for a variety of scenarios, including recording studios, live performances, classroom teaching, conferences, and speech events. User-Friendly and Versatile The Debra monitor system is not only user-friendly but also versatile, with a plug type of US Plug.
eBay
Professional Wireless SM-2050 In-ear Monitoring System 2/4/6/8 Channel Multi-bodypack Monitor, Band Stage Outdoor in-ear monitor
Aliexpress UK
Wireless frequency: 2.4GHz. Stereo DAC output: 24bit operation. 1 pair earphone. Frequency range: 2.4GHz-2.48GHZ. Transmitter battery capacity: 150mAh.
eBay
M-VAVE WP-12 2.4GHz Wireless In-Ear Monitoring System|1Tx+2Rx System w/3ms Ultra-Low Latency|24H Playback|1800mAh Charging Case
Aliexpress UK
Introducing the LEKATO MS-02 Wireless in Ear Monitor System. Experience the freedom and convenience of 2.4G Stereo Wireless IEM System. Perfect for studio recordings, band rehearsals, and live performances.
eBay
IEM system, wireless in ear monitoring system with transmitter and lavalier receiver, suid lavalier receiver, for band rehearsal
Aliexpress UK
Sub zero in ear monitor kit fully working.please see images - included are 3 monitor units 1 with sub zero in ears and 2 with stagg spm 435s which make for alot better sound quality when worn.the kit is fully working batteries have been removed for storage and post i will post next day for you.really good bit of kit for monitoring on stage a lot more control as you have the volume at your finger tips allowing for a better stage experience when playing.any questions please ask or if you want more pics just message Thanks.
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Leicozic Best Stereo In-Ear Monitor PM20 2Channel Wireless Ear Monitoring System Rack-Mount True Diversity 4 Receiver 500/600Mhz
Aliexpress UK
Wireless frequency: 2.4GHz. Stereo DAC output: 24bit operation. 1 pair earphone. 1x Transmitter. Frequency range: 2.4GHz-2.48GHZ.
eBay
EYK EM11 Stereo In Ear Monitoring System 2.4G Digital Stable Transmission Rechargeable Wireless Earphone Monitor Mute Function
Aliexpress UK
It is ideal for a variety of scenarios, including recording studios, live performances, classroom teaching, conferences, and speech events. User-Friendly and Versatile The Debra monitor system is not only user-friendly but also versatile, with a plug type of US Plug.
eBay
Debra UHF Wireless In-Ear Monitoring System ER-102 with bluetooth5.0 for Stage Performance,Recording,Band,Drummer,Church speech
Aliexpress UK
Introducing the LEKATO MS-02 Wireless in Ear Monitor System. Experience the freedom and convenience of 2.4G Stereo Wireless IEM System. Perfect for studio recordings, band rehearsals, and live performances.
eBay
Debra SW-1 Professional Wireless Stereo In-Ear Monitoring System, 590-599 MHz Stable Transmission for Stage and Live Interviews
Aliexpress UK