User's Manual

P a g e 4
1. Global system specifications
All units are for outdoor use, required Radio regulations according to target market &
Low voltage 24VDC regulation (except for tags which powered by internal battery).
1.1 System components
eSense Ear TAG – Activity based tag with 2.4GhZ transceiver.
BU-500 – LD Base unit, with RS-485 network interface and 2.4GhZ transceiver.
BU-500E – LD Base unit, with 10BASE-T/100BASE-TX Ethernet network
interface and 2.4GhZ transceiver.
1.2 TAG - BU communication overview
Tag
Tag initiate sending data
BU500 Tag
BU initiate sending messages
BU500
20 minutes
RF
Legend:
*When no ACK from tag
No retries when tag sends data