<![CDATA[UHF-RFID-UNIT-JRD-4035 effective distance]]>Web page shows
"the transmission power of 100mW can reach the effective distance of more than 1.5M."

https://shop.m5stack.com/products/uhf-rfid-unit-jrd-4035?variant=39375750824108

But my JRD-4035 effective distance is 0.4M

If possible , could you let me know why JRD-4035 is low performance ?

]]>https://community.m5stack.com/topic/4083/uhf-rfid-unit-jrd-4035-effective-distanceRSS for NodeTue, 28 Apr 2026 22:32:00 GMTFri, 25 Feb 2022 11:12:44 GMT60<![CDATA[Reply to UHF-RFID-UNIT-JRD-4035 effective distance on Wed, 01 Jun 2022 03:39:05 GMT]]>@paopao Hi! If using UIFlow, then this is it, if it‘s Arduino. Serial port sending commands
or use API， then CH_index = 1
0_1654054725279_0ec00c90-ec5d-4409-94fc-8dd08c895076-772b8705d595ffaaf664b365dfa2283.png

0_1654054732810_ba3533da-f619-4abc-911a-0eec1f118a04-7a340fb489da51d7a3242baec51cccb.png

https://github.com/m5stack/M5Stack/blob/master/examples/Unit/UHF_RFID_JRD4035/RFID_command.cpp

0_1654054741933_08d5a35d-3ca2-4e2f-bfb2-00ff3e69579b-4bca5f4ba3a089a03c27cc592164b60.png

]]>https://community.m5stack.com/post/17621https://community.m5stack.com/post/17621Wed, 01 Jun 2022 03:39:05 GMT<![CDATA[Reply to UHF-RFID-UNIT-JRD-4035 effective distance on Fri, 13 May 2022 14:50:36 GMT]]>@m5stack_ag san,
Thank you for your message!
Could you let me know how to set 920MHZ ?

By the way, Specification metal IC Tag of mine is "Up to 4.2M - (US) 902-928MHz, on metal"

]]>https://community.m5stack.com/post/17481https://community.m5stack.com/post/17481Fri, 13 May 2022 14:50:36 GMT<![CDATA[Reply to UHF-RFID-UNIT-JRD-4035 effective distance on Sat, 09 Apr 2022 08:15:53 GMT]]>@PAOPAO Hi there! The required configuration is 920MHZ so the antenna can work the best

]]>https://community.m5stack.com/post/17141https://community.m5stack.com/post/17141Sat, 09 Apr 2022 08:15:53 GMT