1Product Overview
The 2.4G ceiling mounted reader JT-R2420A is a high-performance RFID omnidirectional card reader designed mainly for IoT applications. It adopts 2.4GHz civilian wireless communication technology, high sensitivity and low power consumption technology design, low radiation without harm to the human body, stable performance, and strong anti-interference ability and high-speed card reading ability. Using TCP/IP network communication interface, POE power supply method, and wired connection100MNetwork port andRS232Looking for a card. Internal configuration of the reader/writerWiFiCommunication function, reader/writer throughWiFiconnectionWiFiofAP-HotSpot,Connect to thisWiFiThe client can search for cards through the backend. Meet the needs of customers to communicate with the backend using WiFi networks.
IIProduct features
1. Work status indication:Indicate the working status of the equipment through indicator lights;
2. operating frequency:2.4G-2.483GHz;
3. TCP/IPNetwork function:Use TCP/IP network communication interface;
4. WiFiWireless card search function:StationEnd, can also be set according to customer requirements2.4GThe card search function of the reader/writerAPHot spot cascading card reading distance.
5. Omnidirectional identification;360Du Xun Card
6. High security anti-interference technologyUsing newly developed multi frequency anti-interference technology for communication, the card information is strictly encrypted using our company's unique encryption technology, and digital processing is performed using multiple verification methods before being sent to the reader; The product fully complies withFCC,CE,3CRadio Frequency Spectrum Specification Standard
7. High recognition rateRecognition accuracy:99.999999%
8. High card search sensitivity:-90dBm +/-2dBm
9. anti-collision: UseARMTechnology, possessing200Simultaneous card reading function;
10. Adjustable card reading distanceBased on the unique receiving signal of Jietong TechnologyRSSIAlgorithm, which can set the distance for reading tags to meet the requirements of card reading distance in practical applications;
IIISpecifications
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physical parameters |
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Overall dimensions |
205mm*45mm |
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Material |
plastic |
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Product color |
white |
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Product weight |
300g |
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packaging |
Corrugated paper box(1a/Box (customizable) |
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environmental parameters |
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Operating Humidity |
≤90% |
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Operating Temperature |
-25℃ ~+75℃ |
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Storage temperature |
-40℃ ~+85℃ |
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performance parameters |
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working power supply |
DC12V~DC48V/1Aor passPOEPower over Ethernet |
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operating current |
≤130mA |
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Collision ability |
200PCS |
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Identify distance |
0-50Meter (adjustable) |
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operating frequency band |
2.4GHz-2.5GHz |
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reception sensitivity |
-90dBm |
4antennaparameter
S11性能
S11 at 2450MHz is -37.34dB
smith chart
At 2450MHz, the impedance almost reaches the ideal 50 ohm pure impedance
standing wave ratio

The standing wave ratio is close to the ideal 1.0
antenna pattern

vertical direction

