NearLink Wireless Microphone System D100W D100R

Transmitter Features:

Designed for classroom teaching, based on NearLink wireless technology.
Powered by a 100% domestic RISC-V processor.
No battery anxiety, lithium battery lasts up to 4 hours.
Fast-charging case included, capable of fully recharging the microphone more than three times.
Compact size: 32 mm diamete r, 13.8 mm thickness.
Ultra-lightweight design, weighing only 10.5 g.
Two wearing options (clip-on and head-mounted magnetic accessories, freely switchable) for easier interaction.
Multi-room use, no cross-channel interference (any microphone can pair with any receiver).
One teacher, one microphone, clean and hygienic.
Simple operation, only a single power button.

Receiver Features:

86-box design, easy to install.
DSP audio processing with built-in feedback suppression, automatic gain control, smart noise reduction, and intelligent sound field calibration.
Automatically pairs when powered on near the card-swipe area, and disconnects automatically when powered off.
Wireless receiver supports UAC digital output and analog output.

Datasheet

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DETAILS

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The D100W D100R NearLink Wireless Microphone System is designed for educational applications, providing clear and stable sound reinforcement and recording for classroom teaching and lecture capture. With advanced NearLink wireless transmission technology, it creates an interference-free teaching environment. Powered by a domestically developed RISC-V processor, the system ensures high performance, low latency, and exceptional stability. Integrated with intelligent algorithms such as feedback suppression, automatic gain control, smart noise reduction, and intelligent sound field calibration, the microphone delivers clear, consistent audio across the entire classroom without volume fluctuations. Its compact, lightweight design ensures a comfortable fit throughout the class. Compared with traditional handheld microphones, it frees the user’s hands for natural gestures and movement. Compared with far-field microphones, it provides superior sound quality and a wider pickup range, allowing free movement without loss of clarity.

A complete microphone set includes a charging case, a transmitter, and a receiver. The charging case enables quick recharging of the transmitter, while the receiver supports both UAC digital output and dual analog outputs for flexible integration into various classroom systems.

Model		D100W
Transmitter	Transmission Method	NearLink SLE protocol
	Polar Pattern	Omnidirectional
	Operating Range (Line-of-Sight)	20m
	RF Output Power	10dBm
	Frequency Response	100Hz~20kHz
	Sampling Rate	48KHz
	Bit Depth	16 bit
	SNR	≥80dB
	Built-in Battery Capacity	97 mAh
	Charging Method	Via charging case contacts, also supports USB-C charging
	Battery Life	Approx. 4 hours
	Charging Time	Approx. 1 hour
	Weight	10.5 g
	Dimensions	32 mm × 32 mm × 13.8 mm
	Working Temperature	0 °C – +50 °C
Charging Case	Battery Capacity	300mAh
	Power Supply Mode	Powered via charging case contacts
	Number of Charges for Transmitter (Microphone)	>3 times
	Charging Time	Approx. 1 hour
	Weight	39g
	Dimension	60.3 mm × 50.1 mm × 28.4 mm
	Working Temperature	0 °C – +50 °C

Model	D100R
Transmission Method	NearLink SLE protocol
Operating Range (Line-of-Sight)	20m
RF Output Power	10dBm
Frequency Response	100Hz～20kHz
Sampling Rate	48KHz
Bit Depth	16 bit
SNR	≥80dB
Audio Output	UAC digital, balanced analog (Phoenix connector), unbalanced analog (3.5 mm TRS)
Power Supply Mode	12 V DC or USB-C
Weight	30g
Dimension	86.1mm×86.1mm×27.3mm
Working Temperature	0 °C – +50 °C
Storage Temperature	-10 °C – +50 °C

Name	NearLink SLE Protocol
Protocol Version	SLE 1.0
Bandwidth	Up to 4 Mbps
Operating Frequency	2.4 GHz ISM band (2402–2480 MHz)
Transmission Rate	Up to 12 Mbps, six times faster than traditional Bluetooth (2 Mbps)
Air Interface Latency	0.25 ms — 1/20 to 1/28 of Bluetooth 5.3, 1/4 to 1/8 of BLE
Channel Coding	Polar code channel coding (higher reliability, fewer retransmissions, lower power consumption)
Interference Resistance	Adaptive Frequency Hopping (AFH) technology for enhanced anti-interference capability
Security	AES-128 encryption supported to ensure secure data transmission