EX-938 wireless acoustic transmission tour guide system is widely used in group activities such as tour guides, factory visit, horse riding,voice teaching, business management training,church translation, simultaneous interpretation, popular used in church, Tour guiding, Wireless meeting, Wireless teaching, Simultaneous Interpreting, Corporate hospitality,Factory tour visit,Field interpretation, Museum visiting ,corporate hospitality ,Houses of worship,Assisted Listening,Social Distancing ,Silent Disco,Square Dance,Stage Performance,Classroom Teaching ,YOGA Training,Court Interpretation,Job Training,Conference,Trade Show,Product Launch,Bus Trip,City center tour,Exhibitions,Museum,Gallery.... Highlights of EX-938 Wireless Audio Tour Guide System: One transmitter can work with multiple receivers.Frequency synthesized PLL circuitry for stable signal transmission.Two jacks for the microphone and audio ensuring variable utilization.UHF overcome background noise and social distancing.The EX-938 operates over 15 hours on standard AA batteries, so you don't have to worry about proprietary batteries.Up to 492ft/150M voice signal transmission range without interruption.11 independent channels, up to 5 groups work simultaneously at the same location.Receiver features a large volume control lets you make adjustments quickly and easily.Pocket-sized unit fits in a shirt pocket, clips to a belt, or sits unobtrusively on a tabletop. Package List: 1x Transmitter 1x Headset Microphone 1x Lapel Microphone 1x User manual Shipping Weight:210g/7.4oz EX-938 UHF WIRELESS AUDIO DESCRIPTION EQUIPMENT SPECIFICATION_TRANSMITTER ONLY Frequency Control: PLL synthesized functionCarrier Frequency: 500MHzModulation Mode: UHFFrequency Response: 60Hz-15kHzS/N Ratio: >45dB (at 1kHz)Total Harmonic Distortion: <1%Transmit Power: ≤10mWInput Level: Virtual Value 500mVTransmitter Power Supply: 2 x 1.5V AA Batteries(NOT included)Transmitter Playtime: Approx. 15Hrs Operating Range: Approx. 150M / 492 Feet Transmitter Dimensions:9x6.5x2cm Transmitter Weight: Approx. 66g/2.33oz Low-power consumption design, 2pcs AA battery(NOT Included) can work more than 15 hours.Please install AA batteries correctly, it will not power on if you mix up positive and negative pole.The top of the unit offers two standard 3.5mm jacks for connecting the included microphone and audio cable.AUX is for external audio inputting, such as music playing from CD or MP3 player, MIC is for real-time human voice inputting,such as teaching, training, touring etc.MIC and AUX could NOT be input at the same time, otherwise you will get sound distortion. Rich, High-quality Audio and Voice The EX-938 transmitter have superior and impeccable sound quality.Deliver crisp, clear listening experiences with our smart audio technology. Included standard 3.5mm jack headphone to make you hear the voice clearly. 11 Select-able Channels The transmitter has 11 channels and up to 5 groups can operate within the same environment.The 11th channel is compatible with the old version EXMAX UHF-938 receiver, and the receiver has 10 channels in total. Support Stereo One-way Audio Input The transmitter features an audio socket to enable the connection of a smartphone/media player. A pre-recorded commentary or music can be played into the system. This can enhance the event for your guests and reduce the strain on the presenter’s voice. Application Guided Tour: For tour-guiding events Tour guide speaking to a group of visitors, Factories Visiting, Museums, Galleries, Tourist Attractions, Cruise Ships, Bus Sightseeing, Quad Safari/Segway Tours, Employee & Dealers Training,Industrial Tourism, Hotels and Resorts,etc. Assisted Listening:For audio and audio-visual teaching applications Presenter speaking to people who are hard of hearing, Trainer speaking to horse rider,Audio describer describing scene to partially sighted or blind people, Arts Performance, Square Dance, Classroom Lectures, Training and Seminars.... Language Interpretation: For all kinds of conferences Interpreter translating message from floor language into foreign language, Courtrooms, Educational Institutions, High-level Exhibition, Simultaneous Interpretation, Conferences or Conventions, Houses of Worship, Medical Facilities, Corporate Meetings, Governmental Agencies,Silent conference breakout meetings in exhibition spaces, Commentator providing silent commentary to spectators at a sporting event.... Social Distancing Solutions: Presenter speaking to a group of audience VIP Reception, Seminars, Summit, Field Trip, Outdoor Team Contact, Product Launches, Lectures in noisy exhibition halls, Stunt Kite Display Team....