Yarmee Electronic Technology Co., Ltd.

Digital conference system for discussion /audio conference system Sm612c/sm612d is a standard desktop microphone, simply operate, have auto/fifo mode, press the “application” button can make it start. Built-in dsp digital-processing chips can improve ability of sound processing. Excellent immunity to rf interference from mobile phones and rf devices. Chairman unit sm612c Delegate unit sm612d Main features: •pluggable gooseneck microphone with light ring •high sensitivity, effective pick-up range up to 50cm •support multiple chairman and vice-chairman at same time •speech patterns and apply itself is optional, common mode •not any impact on sound quality under long distance transmission •increased reliability with "closed loop - daisy chain" connection topology •system unit support hot plug function •highly resistant to mobile phone interference •chairman unit can override all the active delegate units and approve or reject delegates who request to speak Technical specifications: Pick up range: 0- 500mm Frequency response 40hz-19khz Sensitivity -42db±3db Snr -80db Nonlieardistortion

Features: 1. Widely used in classroom for classroom audio enhancement. 2. Ir code, easy to set up the link between the transmitter and receiver. 3. Hnad free and portable, neck pendant design. The voice does not drop out even the teacher facing the whiteboard. 4. Excellent noise filter, no cross talk, long distance transmit ability. 5. Support interactive talk when using two microphones. 6. Work under 2. 4g frequency, more stable and wide transmission. Application: Classroom, conference room Specification: Easymic r-e2 Dc power 7.5v Output current:100ma/160ma(working) Color:painting gray/black + red Weight:1.1kg Dimension standard 1/2u Frequency 2402~2480mh2(auto) Sensitivit y 82dbm(0.1%ber) Frequency response 50hz~20khz(3db) Snr:ú+90db Pattern :gfsk, bt=0.5gaussian Link:ir code Antenna:sma/tw Easymic t-e2 Working duration:í²6hrs Charging duration:ín4hrs Battery :3.7v/500ma, lithium battery Battery life ú+500times(full charged and full released) Working mode:ir code connection, auto frequency hopping Use mode:hand-set/neck-set/land-set Emission power:20mw Emission length:50m Frequency :2402~2480mh2(auto), ism Link:ir Sensitivity:82dbm(0.1%ber) Fr equency response:50hz~20khz(3db) Snr:ú+90db Pattern :qfsk, bt=0.5gaussian Dimension 23.8mm(w)x16mm(l)x93mm (h) Weight:28g(including battery)

Transmitter specifications Carrier wave frequency range:793.10~821.60MHz Channel:96 Oscillation mode: synthesized Frequency stability:í+10ppm Modulation mode:FM Transmiter power:10mW Frequency response:40~20000Hz T.H.D :

Mc-310 Specifications£º Frequency range: 730-960mhz Automatic transmitter setup channels: 200 Display model: lcd Oscillation mode: pll synthesized Frequency stability: ¡à10ppm Receive mode: superheterodyne Input sensitivity: -90dbm Audio response: 40hz¡«20khz T.H.D. At 1khz: ¡ü0.5% Signal to noise ratio: ¡ý110db Rf output: 10mw(50mw max) Modulation mode: fm Battery requirement: 2¡á1.5v aa size

Uhf wireless microphone/ wireless microphone/ wireless karaoke microphone Selling points: 1. Uhf 99 channels 2. Customerized uhf wireless microphone Solution 1: with wireless microphone Solution 2: with body pack transmitter and headset microphone / lapel microphone 3. Frequency: 670-690mhz, transmitting distance: 70-100m, transmitter battery 12 hour Model: bl-1003 mini uhf wireless microphone system Features: Receiver Power supply: ac100~240/45~60hz External dc power: 16~20v Power consumption: 5w S/n ratio: >90db; p/n ratio: >80db; f/n ratio: >80db Receiving sensitivity: 5dbu(sinad=20db) Transmitter Transmitter power: 10mw Modulation mode: fm Maximum deviation: ± 50khz High harmonics: more than 40db(with carrier) Battery voltage: aa 1.5v× 2/9v Battery life: 12 hour Power switch noise: provide with perfect switch noise deducted circuit Main function Frequency range: uhf 670-690mhzmhz Frequency stabilization: < ± 30ppm Dynamic range: >90db Total harmonic distortion: < 0.5% Frequency response: 40hz~20khz± 3db Audio outpout: separate type: 0~± 500mv Mix type: 0~± 300mv

Model: bl-1031 uhf dual-channel wireless microphone system Boly bl-1031 wireless microphone system delivers superior sound quality and professional features. It is designed for a wide range professional application with 200 selectable channels. For easy use with multiple systems, no confusing frequency groups. It can be placed next to speakers with no feedback or distortion. It is perfect for professional use at any events. Selling points: 1. Uhf 200 channels 2. Customerized uhf wireless microphone (decided by client) Solution 1: with wireless handheld microphone Solution 2: with body pack transmitter and headset microphone / lapel microphone 3. Frequency: 780-840mhz, transmitting distance: 120m, transmitter battery 8 hour 4. Adjustable transmitting range, from 20m to 120m. 5. Big backit lcd display 6. The handheld transmitter (microphone) have mute and lock function. Features: Uhf 670~840 mhz quartz control phase locked. 200 channels Hight-fidelity cartridge module. Super anti-jamming circuit design. Super-low background noise. High effciency batteries consumption design. Scope of application: ktv, school, hall, family, party.

Mike and Speaker all-in-one! New concept portable mike system Realizing the freedom of wireless microphone and the stability of wired microphone Micker has evolved Micker Pro with various requirements from the field Micker is optimized for classroom and lecture room environment and good to use for any internal and external activity of group meeting, such as academic institute, kinder garden, conference room, church and seminar, etc Patended Technology: exclusive dual speaker provides convenient and stable quality of sound with no directional loss inside classroom environment, and provides various options including howling suppressor technology through all-in-one mike structure that can be used for lecture debates at indoors and outdoors (3-level volume adjustment, external device player, internal charging circuit, charging unit, echo, buzzer)

Built with human satisfaction in mind this is the best solution