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Functional Characteristics: 1.VHF frequency-locking bi-channel wireless conference microphones; high sensitivity; wide frequency response; good directivity; stable functions; convenient operation; and so on. 2. Metal material standard case; 1U metal panel configured with bi-channel receiver. 3.The mainframe respectively provides balanced audio output sockets and mixed unbalanced output sockets. 4. widely fitting to various connecting requirements, sell well at home and abroad; suitable for different kinds of conferences. Specification Parameter: Receiver Parameter: Oscillation: quartz crystal oscillation; Frequency Range: VHF 200MHz¡«270MHz; frequency stability: ¡À0.001%; Maximum Frequency Deviation: ¡À50KHz; Modulation Mode: FM; S/N Ratio: >105Db; T.H.D: <0.5%@1KHz; Sensitivity:1.2/UV @S/N=12dB Power Supply£ºDC 12V¡«17V; Audio Output: Free Standing 0¡«400mV Mixed Style 0¡«300mV Emitter Parameter: Oscillation: quartz crystal oscillation; Power Supply: DC 9V; Frequency Range: VHF 200MHz¡«270MHz; Microphone Power Consumption: 30mA; Frequency Stability: ¡À0.001%; Carrier Frequency: VHF 190MHz¡«270MHz; Maximum Frequency Deviation: ¡À50KHz; Frequency Stability Degree: ¡À25KHz; Modulation Mode: FM; S/N Ratio: >105dB; ACI Ratio: >80dB; T.H.D: <0.5%1KHz; DR Range: ¡Ý100dB; Sensitivity: 1.2/UV S/N=12dB; Type: condenser; Power Supply: DC 12V¡«17V; Polarity Mode: sole directivity; Frequency Response: 40Hz¡«20KHz; Microphone Sensitivity: -47¡À3dB1KHz

Functional Characteristics: 1. This product is designed as infrared automatic frequency-modulation. 2. The information channel can modulate frequency of multichannel wireless microphones. This product adopts PLL phase locking techniques of UHF frequency band with less noise and disturbance. Any similar system cannot compare with the perfect noise resistance of it. Metal Material Standard Case: 1. PLL phase locking the frequency of oscillating circuit 2. 300 frequency points of tuning are selective 3. Pilotone locking dual mute 4. infrared frequency-modulation Specification Parameter: Carrier Frequency: 900MHz Frequency Stability: ¡À0.001% Max. eviation Range: ¡À50KHz; Modulation Mode: FM S/N Ratio: >105dB; T.H.D:<0.5%1KHz Sensitivity: 1.2/UV S/N=12dB; Power Supply: DC 12V¡«17V Audio Output: Free Standing 0¡«400mV Mixed Style 0¡«300mV Shoot Machine Parameter: Power Supply: DC 4.5V £¨1.5V AA*2£©

Functional Characteristics: 1.VHF frequency-locking bi-channel wireless conference microphones, high sensitivity, wide frequency response; good directivity, stable functions, convenient operation, and so on 2.Metal material standard case, 1U metal panel configured with bi-channel receiver. 3.The mainframe respectively provides balanced audio output sockets and mixed unbalanced output sockets. 4.Widely fitting to various connecting requirements, sell well at home and abroad; suitable for different kinds of conferences . Specification Parameter: Receiver Parameter: Oscillation: quartz crystal oscillation; Frequency Range: VHF 200MHz¡«270MHz; frequency stability: ¡À0.001%; Maximum Frequency Deviation: ¡À50KHz; Modulation Mode: FM; S/N Ratio: >105Db; T.H.D: <0.5%@1KHz; Sensitivity: 1.2/UV @S/N=12dB Power Supply: DC 12V¡«17V; Audio Output: Free standing 0¡«400mV Mixed style: 0¡«300mV Emitter Parameter: Oscillation: quartz crystal oscillation Power Supply: DC 9V Frequency Range: VHF 200MHz¡«270MHz Microphone Power Consumption: 30mA Frequency Stability: ¡À0.001% Carrier Frequency: VHF 190MHz¡«270MHz Maximum Frequency Deviation: ¡À50KHz Frequency Stability Degree: ¡À25KHz Modulation Mode: FM S/N Ratio: >105dB ACI Ratio: >80Db T.H.D: <0.5%@1KHz DR Range: ¡Ý100dB Sensitivity: 1.2/UV @S/N=12dB Type: condenser Power Supply: DC 12V¡«17V Polarity Mode: sole directivity; Frequency Response: 40Hz¡«20KHz Microphone Sensitivity: -47¡À3dB@1KHz

The Conference Mainframe: V500 The system mainframe develops and designs with the combination of digit circuit and artificial circuit; the 2U case has a menu with LCD (flexible choice of both English and Chinese display), which is more direct and humanized. The Chairman Unit: V500C This base of the unit is made with zinc-hafnium alloy. The whole craft is neat and professional. The design of base and microphone tube adopts separable type. The audio beam condenser microphone is used to realize picking up of the high-quality voice. The chairman unit JM-621 has the priority of voicing. When the mainframe is set in the automatic mode, the microphone will work automatically once you speak; the microphone has a red-halo indicator. The Representative Unit: V500D This base of the unit is made with zinc-hafnium alloy. The whole craft is neat and professional. The design of base and microphone tube adopts separable type. The audio beam condenser microphone is used to realize picking up of the high-quality voice. When the mainframe is set in the automatic mode, the microphone will work automatically once you speak, the microphone has a red-halo indicator. Conference Camera: DS770 Specification Parameter: The Conference Mainframe: V500 This system has a set of image tracking functions which are very convenient, such as video tracking and squeal restricting; the system unit can check automatically, and the voicing mode set is created, such as FIFO mode, FILO mode, voice restrict mode, automatic mode, and voice application mode. Coordinated with a video switcher, the system can connect 6 cameras and can accept camera protocols of PALCO, P/D, SONY, and SAMSUNG, as well as customize various brands ¡¯camera protocols. In addition, there is auxiliary input of voice frequency. Four ways of output, each to 24 units, can connect at most 96 units. The mainframe can sustain one chairman unit, with RS-232C output port that can connect with the center control. The Chairman Unit: V500C/ The Representative Unit: V500D Frequency Response: 100-10KHz Sensitivity: £­50dB/Pa SNR: 70dB Conference Camera: DS770 Imaging Device: SONY 1/4 inch CCD Effective Pixels: 752(horizontal) ¡Á 582(vertical), Signal System: PAL/NTSC; Horizontal Resolution: 550 wire, Synchronizing System: internal/external; Shot: 8x zoom, F=4.1mm(wide) to 73.8mm(TV), F1.4 to F3.0; Horizontal View Angle: 48 degree (wide-angle end) to 2.8 degree (far end)

Parameter Specification: Imaging Device: SONY 1/4 inch CCD; Effective Pixels: 752(horizontal) ¡Á 582(vertical), Signal System: PAL/NTSC; Horizontal Resolution: 550 wire, Synchronizing System: internal/external; Shot: 8x zoom, F=4.1 mm (wide) to 73.8 mm (TV), F1.4 to F3.0; Horizontal View Angle: 48 degree (wide-angle end) to 2.8 degree (far end)