8 Port UHF RFID Module for Asset Management_RFID Reader/RFID Card/RFID Tag Sticker Supplier

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Product Name:8 Port UHF RFID Module for Asset Management: Product Model:NR-908

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Product Overview

NR-908 is a UHF RFID Module. It is designed upon fully self-intellectual property. Based on proprietary efficient digital signal processing algorithm, it supports fast tag read/write operation with high identification rate. It can be widely applied in many RFID application systems such as logistics, access control, and industrial production process control system.

Features

Domestic chips are independently controllable
Autonomous Z-search multi-label recognition algorithm
Data processing power of high-performance CPU
Heat evacuation and temperature monitoring feedback in key heat-generating areasl
Realize the full protocol function of 6C
The hardware monitors the running status of the system to ensure the continuous operation of the system without crashes
Extended SPI communication interface ensures high-speed data transmission

Application:Handheld mobile/device fixed reader/clothing and new retail automatic assembly line for book and file management/access control system.

RF interface
project	parameters	illustrate
RF output	Independent read and write mode 13-33dBm, step 1dB, power adjustment Integer accuracy ±0.5dB	Support DRM mode
Frequency	China SRRC-MII 920-925MHZ,840-845MHZ
	European standard ETSI 865.6—867.6MHZ
	Korea KCC 917-920.8MHZ
	Australia ACMA 920-926MHZ
	American Standard FCC 902-928MHZ
	Other 865-869MHZ	customizable
Antenna connector	Four 50 ohm SMA female connectors	Supports 8 independent antennas
Transmitter Spectrum	Meet the requirements of domestic radio management regulations: Adjacent channel -30dBc; spaced channel -60dBc	Antenna standing wave ratio is recommended to be less than 1.5
Performance
sensitivity	Module Receive Sensitivity
	-79dBm at 15dBm transmit power; -77dBm at 30dBm transmit power;
Tag cache	1000 @96bitEPC tags	Supports both cache and real-time inventory modes
Card reading speed	>300 sheets/second	Depends on tag, antenna gain and transmit power
Tag reading distance	EPC tag 12dBi linearly polarized antenna up to 30m	Depends on selected tag and antenna
Other indicators
Tag RSSI	Support
Antenna Connection Detection	Support
Ambient temperature monitoring	Support
Electrical parameters
Operating Voltage	3.6--5.5V
Working Mode Power Consumption	<6.9W（typical value)	At maximum transmit power
Standby mode power consumption	0.25W	idle wait state
Sleep mode power consumption	0.05W	sleep power saver
logic level	VIL -0.5 –0.8V
	VIH +2 —3.3V
Interface Features
Communication Interface	TTL Uart interface, baud rate 115200bps
	SPI (up to 18Mbps)
GPIO interface	3.3V 1 input 1 output
Connector	15pin header, pitch 1.25mm
Ambient temperature
Operating temperature	-40℃--+65℃
storage temperature	-45℃--+85℃
Working humidity	<95% (25℃)
Physical Specifications
Cooling method	External cooling
Module size	917010.1 mm

The Pin

pins	definition	illustrate
1	GND	land
2	GND	land
3	3.8V – 5.5V DC	power supply
4	3.8V – 5.5V DC	power supply
5	SPI_MISO	SPI master data input slave data output
6	SPI_MOSI	SPI Master Data Out Slave Data Out
7	SPI_CLK	SPI clock
8	SPI_CS	SPI chip select
9	UART_TXD	Serial output TTL 3.3V level
10	UART_RXD	Serial port input TTL 3.3V level
11	GPIO_IN	General GPIO 3.3V level, input
12	GPIO_OUT	General GPIO3.3V level, output
13	BUZZER	Active high buzzer output TTL, requires external drive.
14	EN	High level enables 3.3V level
15	NRST	Reset control, active low