■ frequency range: 640-690mhz

■ number of adjustable channels: 100 × two

■ oscillation mode: phase locked loop frequency synthesis (PLL),

■ frequency stability: ± 10ppm,

■ receiving mode: superheterodyne secondary frequency conversion,

■ receiving sensitivity: - 95 ~ - 67dbm,

■ audio frequency response: 40-18000hz,

■ harmonic distortion: ≤ 0.5%,

■ signal to noise ratio: ≥ 110dB,

■ audio output: balanced output and mixed output,

■ transmission power: 3-30mw,

■ modulation mode: frequency modulation (FM)

■ Battery Specification: 2 No. 5 batteries,

■ power specification: 100-240V 50-60Hz 12VDC (switching power adapter) or 220VAC / 50-60Hz 12VDC (linear power supply),

■ power consumption: ≤ 10W

 The industry´s first patented technology of automatic hand sensing. The microphone automatically mutes within 3 seconds after leaving the hand stationary (in any direction and at any angle), automatically saves energy and enters the standby state after 5 minutes, and automatically shuts down and completely cuts off the power supply after 15 minutes. It is an intelligent and automatic wireless microphone with a new concept.

◆ brand new audio circuit structure, exquisite treble, strong medium and low frequency, especially perfect expressiveness in sound details. The super dynamic tracking ability makes the long-distance / short-distance pickup and playback free.

◆ the new concept of digital pilot technology completely solves the phenomenon of mutual frequency concatenation in KTV private rooms and never frequency concatenation!

◆ the circuit with whistling suppression function is configured to make debugging easier.

◆ the function of automatically searching non-interference channel makes the installation more convenient.

◆ the maximum output volume can be freely limited to a wider range.

◆ the host can flexibly set the use times.

◆ UHF band, phase locked loop (PLL) frequency synthesis.

◆ 100 × 2 channels with channel spacing of 250kHz.

◆ superheterodyne secondary frequency conversion design, with extremely high receiving sensitivity.

◆ the RF part adopts multi-stage high-performance dielectric filter, which has excellent anti-interference ability.

◆ the first intermediate frequency adopts sound meter filter, and the second intermediate frequency adopts three-stage ceramic filter, which improves the anti-interference ability.

◆ specially designed mute circuit completely eliminates the impact noise when the microphone is turned on and off.

◆ the microphone uses the easy to buy No. 5 battery, which can last for 6-10 hours.

◆ the microphone adopts a unique boost design, and the decline of battery power will not affect the overall performance of the hand microphone.

◆ ideal environment with an operating radius of 80m, suitable for various occasions.

◆ the default configuration is a microphone tube with LCD, blue backlight and aluminum alloy.

◆ it has adjustable transmission power and adjustable squelch threshold. The rear panel of the receiver is equipped with an external squelch control knob, which can flexibly set the effective operation radius between 10m and 80m as required.

◆ with infrared automatic frequency matching function, the microphone can be quickly synchronized to the working channel of the receiver.

◆ special model for KTV project, two microphones and one host. More than 100 KTV rooms have simple design and unique product configuration.