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12 ports UHF RFID Reader Module

Products Mode: HYM781
HYM781 UHF RFID reader uses R2000 chip which complies with EPC C1G2 protocol its working frequency is 840~960MHz. It supports dense reader working


HYM781 UHF RFID reader uses R2000 chip, which complies with EPC C1G2 protocol, its working frequency is 840~960MHz. It supports dense reader working mode.With standard 8dBi antenna,the reading distance can  reach up to 10meters, maximum identifying speed can reach 400/S; with simple power supply and interface circuit, a high-performance RFID system can be established. It is suitable for new-retail, file management, logistics,
costume, medical industry,garment Industry and complex assets managements etc.


1545122154806642.png Technical Data

No Item Technical data Unit Remark
1 Fixed current 700 mA Max power output@12V
2 Standby current ≤1 mA EN pin low level
3 Frequency range 840~960 MHz  
4 Default working
Frequency hopping MHz Frequency interval 250KHz
5 Channel bandwidth 250 KHz  
6 Frequency hopping speed ≤2 s  
7 Fixed power 31.5 ±1 dBm  
8 Stepping interval 1 dB  
9 Label protocol EPC C1G2
10 Communication
Asynchronous serial
ports protocol
  RS232 Label
11 Starting time ≤50 ms  
12 Radio-frequency
power rising time
≤500 μs  
13 Radio-frequency
power dropping time
≤500 μs  
14 Adjacent channel
power leaking ratio
≤-40 dB ±1CH
    ≤-60 dB ±2CH
15 Frequency stabilizing ratio ±10 ppm -25℃ ~+40℃
    ±20 ppm -40℃ ~+60℃
16 Max reading range 10 m 8dBi antenna

1545122154806642.png Characteristics of DC

Data Mini value Typical value Max value Unit Remark
Voltage of power 9 12 14 V Direct current
Communication level   15   V  Rs232

1545122154806642.png Appearance and structure


• Size(L×W×H):105×95×25mm(90degree SMA connector)
• Weight:100g
• Positioning hole:82*77mm φ4mm screw

1545122154806642.png 4/5PIN Interface definition

4/5pin interface type:Horizon XH2.54mm

PIN Signal name Signal direction Function and compatibility description  
1 VCC Input 12V power  
2 GND - Ground  
3 RS232_TX output RS232 Serial interface transmission  
4 RS232_RX input RS232 Serial interface Receiving  
5 EN input Module power supply enable 5PIN available

1545122154806642.png RF interface
SMA female

1545122154806642.png Requirement on antenna

No Item Technical data Unit Remark
1 Standing wave ratio ≤1.5    

1545122154806642.png Environment requirement

No Item Technical data Unit Remark
1 Working temperature -10~+70  
2 Storage temperature -40~+85  
3 Relative humidity 10%~90% RH