Ritasc RU-386 Wireless Headset Microphone for Teaching Meeting

Before you place an order please read the product manual in English click hereFeatures 1 Use the 670 to 69OMHz frequency band channel A 682 690MHz channel B 670 680MHz strong anti interference 2 Adopt 24Bit 48KHz high performance audio dedicated A D and D A processing 3 Use ID code frequency for data encryption and frequency4 With automatic mute and impact elimination circuit to avoid the impact and noise of switch machine 5 The effective distance of wireless transmission is 20 50 meters 6 Simple operation interface Very few adjustable parts can completely avoid misoperation causedmalfunction 7 Very high pickup sensitivity excellent sound quality so that you can speak or singEasily 8 Multiple devices can be used at the same time without interference and frequency channeling 9 With power and wireless indicator lights 10 Support single frequency Specification Transmitter technical specifications1 Frequency range 670 690MHz2 The number of channels is 10 conservative value each time when pairing the ID code changes randomly within the frequency range set by the manufacturer 3 Oscillation mode DSP chip frequency lock4 Frequency stability ±10ppm5 RF power 10dBm6 Audio frequency response 40 1 8000Hz7 Distortion degree ≤0 5 8 Battery specification 3 7V lithium battery9 3 hours of battery life depending on battery type and capacity Receiver technical specifications1 Frequency range 670 690MHz2 The number of channels is 10 conservative value ea