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GM504 is a 4-channel UHF RFID module, which can 

be used in middle range mobile UHF RFID Reader.  

It’s with good read/write capability, well channel 

isolation, small form factor and well stability. Those 

advantages enable it to be used in the complicate 

environment such as warehousing, logistics, 

production and etc.


Feature



Employs RF chip: Impinj Indy R500 UHF RFID chip

Reading sensitivity, reaches -72dBm

Excellent Anti-collision algorithm, tag read rate reaches 200pcs/second

Channel isolation, reaches -40dB

Worldwide Gen2 platform, accommodate worldwide application

4-Channel RF output, which can save external device payment

High output power, max power reaches 33dBm


Parameter


RFID Features

Parameters 

RF Chip

Indy R500

Air Interface Protocol

EPCglobal Gen2(ISO 18000-6C)

Working Frequency

China:920-925MHz (SRRC)

America:902-928MHz (FCC part 15)

Europe:865-868MHz (ETSI EN 302 208)

840-960MHz:Can be customized according to needs and local status

Output Power

5-33dBm adjustable,step Interva1 dB,precision±1dB

Max Output Power

8W @33dBm

Reading Rate

>200 tag/s

Receiving Sensitivity

-72dBm

Isolation

-40dB

Communication Port

UART, compatible with 3.3V TTL

Baud Rate:115200bps(default)

Antenna Connector

4 channel 50Ω RF connector MMCX female

Tag RSSI

Support

Ambient Temp Monitor

Support



Power Supply

Parameters 

Input Voltage

4.5V-21VDC

Standby Mode Power

 Consumption(EN High)

0.5W

Turn-off mode Power 

Consumption(EN Low)

1uW 



Physical Characteristics

Parameters 

Dimension

68.8mm*43.4mm*7.5mm

Weight

58g

Color

Silver



Working Ambient

Parameters 

Operating Temp.

-25℃~+60℃

Storage Temp.

-40℃~+85℃

Humidity

10%~95%RH








Data download



Application