ST5500 Transition Reader


The ST5500 Transition RFID Reader is a ready-to-use, all-in-one fixed RFID portal reader that not only detects the presence of tags but also tracks their movement direction — useful for monitoring items entering or exiting zones in warehouses, docks, retail backrooms, or manufacturing floors.

The ST5500 integrates a fixed RFID reader and antennas into a single housing, pre-configured and ready to deploy — whether mounted on the wall or suspended from the ceiling. Once installed, it automatically reads RFID-tagged items as they pass through the portal, and determines whether each item is moving in or out of the area, providing valuable data about stock flow and movement direction.

This “transition-point” capability makes it ideal for entry/exit gates, loading docks, warehouse doorways, or any chokepoint where you need to know not just that an item passed, but which way it went. It helps prevent stockouts, theft, or misplacement, and enhances inventory management by adding movement-direction awareness. The ST5500 is suitable for retail distribution, warehouses, manufacturing plants, and logistics centers — anywhere you need automatic, reliable, directional tracking of goods.

CategoryDetails
RFID ProtocolEPCglobal UHF Class 1 Gen2 / ISO 18000-6C
Frequency BandUHF (e.g. 902-928 MHz for US-type readers; region-specific)
Antennas / PortsIntegrated antenna array (pre-configured as a portal / transition setup)
PowerPower-over-Ethernet (PoE / PoE+), or external 24 V DC (supports 12-48 V DC)
Connectivity10/100 Base-T Ethernet (RJ45), USB client and USB host ports
Processor & MemoryEmbedded CPU (600 MHz), 512 MB flash storage, 256 MB RAM, Linux-based OS
Direction TrackingSupports detection of tag movement direction (in vs out of portal) — adds “business intelligence” beyond mere presence detection
Physical Dimensions~ 47.0 in × 22.0 in × 9.0 in (i.e. ~119 cm × 56 cm × 23 cm)
Weight~ 10.4 kg (≈ 23 lbs)
Environmental / Operating ConditionsOperating temperature: –20 °C to +55 °C; Storage temp: –40 °C to +70 °C; Humidity: up to 95% non-condensing; ESD protection supported
Use Cases / ApplicationsWarehouse entry/exit portals, loading docks, shipping & receiving, inventory flow control, retail back-room stocking, manufacturing floor transition zones, asset tracking & theft prevention