SID Global Sdn Bhd UR-004 Manuel D’Utilisation
1-Port and 4-Port UHF RFID Reader User Manual
UHF RFID User Manual
4
2. Ports Illustration
2.1.1 GPIO Port
PIN ID
Function
Equivalent
Circuit
Instructions
PIN1
COM
◆
common port of lock relay
PIN2
NO/NC
◆
normally open of relay
◆
normally close of relay
PIN3
GPIO INPUT +
PIN4
GPIO INPUT -
◆
Voltage between PIN 3,4 <=12V
◆
Heteropolarity
◆
Response time<= 150uS