ideal 9V battery or linear power plus RC filter(10R+470uF)power supply or 7.4V lipo-batteryUsing inductor power or DC-DC or switching power supply or power bank or computer USB will affect the card reader distance
Working current
About 60mA, 5V power supply; About 100mA, 9V power supply
Working temperature
-40~ +80°C
default antenna inductance
580uH
Resonant capacitor capacity
2.2nF (IMPORTANT: Use adjustable capacitor to maximize module working current to get best reading distance）This capacity directly effect reading distance.
The pin definitions are as follows
1
Antenna 1 (with a square mark)
2
Antenna 2
3
4
LED and buzzer output, no card is low level, read the card output 100ms, 2.7KHZ square wave
5
TXD serial card number output, 5V TTL level
6
7
8
GND If AC power supply is used, the system GND suggest connect to AC ground (Earth)
9
5V to 9V power supply, requires pure power
Reading distance reference table
65mm antenna
5Vpower supply
65mm antenna
9Vpower supply
130mm antenna
5V power supply
130mm antenna
9V power supply
2x12mm FDX-B glass tube
9CM
11CM
14CM
16CM
30mm FDX-B ear tag
19CM
21CM
28CM
32CM
30mm HDX ear tag
12CM
16CM
16CM
20CM
TIHDX RI-TRP-RR2B
8CM
10CM
13CM
17CM
Serial ASCII data output format: baud rate 9600,8N2
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