Best radio audio guide system manufacturer

Best radio audio guide system manufacturer Basic Info Best radio audio guide system factory Model NO.: 002LN Plus Style: Device Audio Supported Standard: Standard Screen: LCD FM Radio Function: Without FM Radio Function: Guiding Transport Package: Package Origin: Shenzhen, China SNR: -102dBm Operation: Push-Button Battery Life: 12-20 hours Trademark: Rich Century Specification: 71*50*19mm ?A Tour guide system.jpg Product Description Special Features: Built in lithium battery, 3.5mm stereo headphone jack output. LCD screen. Welcome LOGO can be custom made. 20 different languages and channels. Can be triggered by RF signal within 0~250m. Channel can be locked. High capacity lithium-ion battery, continuous operating time is more than 12-20 hours. FEATURES: Transmit frequency 863-865MHz; Real digital transmit; Channel & Volume Display function. Sampling rate 16K; Frequency Response 50-20KHz sound quality; Ultra-low power consumption, 8hr. Work time for transmitter and 12-20hr. Continuous work time for receiver. Rechargeable Built-in lithium battery can be used; Small in size, no install, flexible in design and support customization; Transmit power 10mW as optional It's workable for at least 20 chaanels' simultaneous using within 250 square meters area. url:http://www.richitek.com