ACR122S – Communication Protocol
Version 2.01
www.acs.com.hk
Page 6 of 57
2.3. Buzzer
A user-controllable buzzer with a default state of
OFF
is provided.
2.4. SAM Interface
One SAM socket is provided.
2.5. Built-in Antenna
A 3-turn symmetric loop antenna, center-tapped is provided.
•
Estimated size is 60 mm x 48 mm.
•
Loop inductance is approximately 1.6 µH – 2.5 µH.
•
Operating distance for a different tag is approximately up to 50 mm (depends on the tag).
•
Only one tag can be accessed at a time.
