Best Channel Performance

SainSmart USB 4 Channel Relay Automation (5V)

NOYITO 2-Channel Micro USB Relay Module is equipped with a stable USB to serial port chip and a microcontroller. It can use the serial port debugging software to send serial commands on the computer to control the opening and closing of the 2-channel relay..
Onboard high performance microcontroller chip, CH340 USB control chip.With power LED indicator and relay status LED.On-board 2-channel 5V, 10A/250VAC, 10A/30VDC relay, long relay life, can work 100,000 times continuously..
Module with overcurrent protection and relay diode freewheel protection..
NOYITO 8-Channel Micro USB Relay Module ASIN：B09RGTSHHW.
NOYITO 4-Channel Micro USB Relay Module ASIN：B09RGVQXXT.

PREMIUM WIRELESS PERFORMANCE: 4 channel UHF wireless microphone system with selectable frequency. Channel 1: 538.3 - 550Mhz (40 channels). Channel 2: 554.8 - 566.5MHz. Channel 3: 571.3 - 583MHz. Channel 4: 587.8 - 599.5MHz. Employs PLL frequency synthesized technology to provide hassle-free sound transmission, minimum dropouts, and maximum feedback rejection. Smooth and quick IR synchronization. Long range operation of 290ft – 328ft line of sight.
STURDY BUILD, MULTICHANNEL MULTISET FEATURE: Sturdy metal builds for the wireless receiver and cordless mic. The cardioid dynamic cartridge is engineered for clear robust optimal true sound. The multichannel feature enables users to select different frequencies when preset frequency fails, thus ensuring interference-free reliable performance. In a total of 4x40 channels, allowing up to 40 systems to be used at the same time. Ideal for church, wedding, karaoke, DJ gigs, public speaking, etc.
AUTO SCAN FEATURE AND ANTI-INTERFERENCE FEATURE: UHF microphone system equips with auto scan function, which enables the system to search for the least interference channel to pair up with transmitters. It also has one 1/4’’ mixed output and 4 XLR separate outputs. 4 antennas design increases anti-interference abilit....

【One Handheld + One Body-Pack】UHF dual-channel wireless system including one handheld wireless microphone, one body-pack wireless transmitter, one lavalier microphone, and one wireless receiver for musicians, DJ's, singers, live sound, stage performance, church, school, hotel, recreation center, auction, and entertainment.
【Two Independent XLR Outputs + One Mixed 1/4" Output】Dual-channel wireless receiver including one 1/4-inch mixed output and two independent XLR outputs (one for each channel, allowing the user to control the sound quality and sound effects of each channel independently).
【Two Volume Control Knobs】Two independent volume control knobs (one for each channel, allowing the user to control the audio level of each channel independently).
【AF LED Indicators and RF LED Indicators】Wireless receiver configured with two AF (for audio signal) LED Indicators, two RF (for radio signal) LED indicators, one power on/off button, one power-on LED indicator, and two independent volume control knobs, one for each channel, allowing the user to control the audio level of each channel independently.

Package Includes: 6-RDV5100 VHF Radios, 6-Rechargeable Batteries, 6-Single Unit Chargers, 6-Antennas, 6-Belt Clips, 6-User Manuals.
Business-exclusive frequencies, Exceptional voice quality, Rugged and water-resistant.
Customer programming software, Bright Sensors, Enhanced battery performance.
Enhanced battery performance, Simplified cloning, Voice activation.
Disable Channel, Channel Annunciation, Repeater Capability, Dynamic Talkaround Scan.

Continental Elite Poly-V belts quiet channel technology is designed for quiet performance, constructed for high efficiency..
Quiet channel technology is a unique staggered-cog profile and advanced rubber compounds virtually eliminate noise typically associated with pulley misalignment.
High-strength tension members allow greater wear resistance.
Quiet channel technology also makes the belt more flexible and run cooler, resulting in a belt that lasts considerably longer than comparable belts.

Package Includes: 2-RDV5100 VHF Radios, 2-Rechargeable Batteries, 2-Antennas, 2-Belt Clips, 2-User Manuals.
Business-exclusive frequencies, Exceptional voice quality, Rugged and water-resistant.
Customer programming software, Bright Sensors, Enhanced battery performance.
Enhanced battery performance, Simplified cloning, Voice activation.
Disable Channel, Channel Annunciation, Repeater Capability, Dynamic Talkaround Scan.

Continental Elite Poly-V belts quiet channel technology is designed for quiet performance, constructed for high efficiency..
Quiet channel technology is a unique staggered-cog profile and advanced rubber compounds virtually eliminate noise typically associated with pulley misalignment.
High-strength tension members allow greater wear resistance.
Quiet channel technology also makes the belt more flexible and run cooler, resulting in a belt that lasts considerably longer than comparable belts.

PREMIUM WIRELESS PERFORMANCE: 4 channel UHF wireless microphone & system with selectable frequency. Channel 1: 538.3 - 550Mhz (40 channels). Channel....
STURDY BUILD, MULTICHANNEL MULTISET FEATURE: Sturdy metal builds for the wireless receiver and dynamic microphones. The cordless microphone has a....
AUTO SCAN FEATURE AND ANTI-INTERFERENCE FEATURE: UHF wireless karaoke microphone system equips with auto scan function, which enables the karaoke....
BOX CONTENTS: 1 channel wireless metal receiver for long range operation, 4 UHF wireless handheld microphone, 1/4’’ audio cable, 1 power adapter,....
DEVOTED SERVICE: Genuine Phenyx Pro audio products come with 12-month manufacturer assurance and supportive customer service. Welcome to come to us....