Item Type: 2.4G Wireless Audio Transmitter Wide Voltage: 100-240V Maximum Transmission Distance: 50m / 164ft Receiver Power Consumption: 5V 45mA Transmitter Power Consumption: 5V 150mA RF Frequency: 2.4GHz Transmitting Power: 14dB Signal to Noise Ratio: 67dB Frequency Range: 20Hz-14.5kHz Maximum Output Level: 1.75Vp-p Operating Temperature: -40-85 Storage Temperature: -60-120 Operating Humidity: -10-90%RH (non condensing) Storage Humidity: -5-95%RH (non condensing) Feature: 1. 2.4G Technology for HD Sound Quality No Delay Transmission 2. Enhanced Transmission with External Antenna 3. Auto Connect upon Powering On 4. Supports RCA and 3.5mm Input Interface 5. Supports RCA and 3.5mm Output Interface 6. Receiver can Drive Headphones 7. Dual Way Volume Control 8. Type C Interface Power Supply Package List 1 x Receiver 1 x Transmitter 1 x English User Manual 2 x Antenna 2 x USB Power Supply Cable 2 x Power Supply Plug 12.4G Wireless Transmission: This wireless audio transmitter uses 2.4G technology to ensure HD sound quality and no delay transmission, reducing cable interference and clutter issues. 250 Meter Signal Distance: The wireless transmitter can transmit 2.0 analog stereo audio signal from RCA and 3.5mm audio interface to a receiver at a distance of 50 meter for listening. 3RCA and 3.5mm Interface: Automatically connected after power on, supports RCA and 3.5mm port input and output, receiver can drive headphones, supports bidirectional volume control. 4Antenna and Power Supply: Equipped with external antennas to ensure better transmission efficiency, equipped with Type C power interface and USB power supply cable, simple and practical. 5Applicable Scenarios: This 2.4G wireless audio receiver and transmitter kit is widely used in home video, education, square broadcasting, stage performances, concerts and other venues.