User's Manual

RFID Reader Module
- 3 -
Characteristics of DC
Data
Mini
value
Typical
value
Max value Unit Remark
Voltage of power 4.5 5 5.5 V Direct current
2 3.3 5.5 V GPIO
Input high level
2 - 5 V EN
-0.3 0 0.8 V GPIO
Input low level
- - 0.18 V EN
Output high
level
2.9 - - V GPIO
Output low level - 0 0.1 V GPIO
Enable current 2 5 25 uA
V
EN
≥2V
Requirement on antenna
No Item Technical data Unit Remark
1
Standing wave
ratio
≤1.5
Appearance and structure
z Size: 76.5×39.7×9mm
z Weight: 50g