How long is the delivery time?

Delivery takes about 4 weeks after receiving the deposit, or within 15 workdays during off-peak season.

What is the signal-to-noise ratio?

The S/N ratio is greater than 105dB.

What certifications does the product have?

The product holds FCC and RoHS certifications.

Professional Wireless Conference System 4 Channel UHF Wireless Handheld Microphones Wm-4000u

Name: Professional Wireless Conference System 4 Channel UHF Wireless Handheld Microphones Wm-4000u
Brand: Guangzhou strong sound electronic equipment Co., Ltd
SKU: 1918444765

Guangdong, ChinaGuangzhou strong sound electronic equipment Co., Ltd

US$50.00-200.00

1 Piece

Product profile

Customization

Available

Type

Wireless Microphone

Usage

Portable Player, Mobile Phone, Computer, Radio, Karaoke

Model NO.

WM-4000U

Special Function

USB Disk Support, With Remote Control, Radio

Chargeable

Non-rechargeable

Display Type

Digital Display

Compatible Product

Universal

Carrier Frequency

UHF610-865MHz

Oscillation Mode

Quartz Controlled Fixed Frequency

Stability

10ppm

Sensitivity

2UV @ Sjnad=12dB

Max. Deviation Range

50kHz

S/N Ratio

>105dB

T.H.D.

<0.5% @1kHz

Image Rejection

85dB Typical

Spurious Rejection

75dB Typical

Frequency Response

60Hz-16kHz

Squelch Control

Dual-Squelch Circuit

Max. Output Level

Balanced: 0-400mv, Unbalanced: 0-300mv

Power Supply

External DC Power Supply, 0.4A, 12-15V DC

Transmitter Power

<30MW

Transport Package

Plastic Bag + Thick Foam + Strong Brown Packing Ca

Trademark

Power and Grace

Origin

China

HS Code

8518400090

Production Capacity

10000PCS/Month

Key features

UHF Wireless Performance: Carrier frequency UHF610-865MHz with >105dB S/N ratio for clear audio.

4-Channel System: Professional 4-channel handheld wireless microphone system for conferences.

Long Battery Life: Transmitters use 2x AA batteries providing over 10 hours of continuous use.

OEM & ODM Support: Full customization available including samples, designs, and flexible options.

Dual-Squelch Circuit: Advanced squelch control minimizes interference for stable signal reception.

Low Distortion Audio: Total Harmonic Distortion (T.H.D.) is less than 0.5% at 1kHz.

Wide Frequency Response: Delivers rich sound with a frequency response range of 60Hz-16kHz.

Versatile Applications: Ideal for churches, education, live performances, and professional sound reinforcement.

Company profile

Guangzhou strong sound electronic equipment Co., Ltd

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 9 years CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤6.29h

AI-Powered supplier vetting

SummaryThe supplier is a China-based limited company established in 2016, with reported export activity, a valid import/export license, and primary products covering speakers, audio equipment, amplifiers, microphones, mixers, and Dante audio. Evidence indicates established service procedures, corrective and preventive action records, technical support, R&D documentation, 3D design services, customization capabilities, and recent new-product development. Production information includes four production lines, six to ten quality-control staff, stated lead times of within 15 workdays in off-peak periods and one month during peak periods, and export markets across Southeast Asia, the Middle East, Europe, and North America. FCC and RoHS certifications are reported, but the supplier lacks a factory environmental impact assessment report. No financial figures are included in this assessment. Customer-specific cases are not provided.

Supplier typeThe supplier is identified as a combined business entity and limited company, operating in Guangdong, China. It is reported as independent of a larger company group and has a valid import/export license, indicating a formally registered standalone trading and manufacturing entity based on the supplied information.

CertificationsThe supplier reports FCC and RoHS product certification capability, and an audit record conducted by BV is listed with a validity period from January 7, 2026 to January 6, 2027. However, the supplier explicitly lacks a factory environmental impact assessment report, so the certification evidence is positive but not comprehensive across environmental documentation.

After-Sales capabilityService capability is supported by written procedures, followed records, an approved supplier list, and a corrective and preventive action mechanism. Technology engineers are also responsible for technical support during production and after-sales service, providing explicit evidence of organized technical and after-sales support.

R&D capabilityThe supplier has R&D engineers responsible for new product development and maintains design input, output, review, verification, and validation documentation for audit. It also reports new products during the past year and provides 3D software design services, supporting a demonstrated innovation function.

Production capacityThe supplier reports four production lines, six to ten quality-control staff, 29 or 56 total employees in different slices, and stated order fulfillment times of within 15 workdays off-peak and one month during peak season. The differing employee counts create a data inconsistency, but the production-line, quality-control, and lead-time information provides explicit evidence of operating production capacity.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. Its engineers confirm customer requirements and provide technical production support, while 3D software design services further support customized product development.