Siemens ADVIA 2400 Operator's Manual page 180

The analyzer reagent tray barcode readers (RTT1, RTT2) are classified as Class I LED
devices having a maximum power output of ≤ 25.5 mW at a wavelength of 655 nm, and a
pulse duration of 200 ns.
1)
Sample Barcode Reader (STT)
2)
Reagent Barcode Reader (RTT2)
3)
Reagent Barcode Reader (RTT1)
180 ADVIA 2400 Operator's Guide