ST-504 control guide
Which ST-504 control question are you asking?
Route mode, pressure, heat, vibration, fault, and safety questions to the correct source.
Mode and pressure
Separate chamber behavior from intensity labels.
Heat and vibration
Treat each function as its own observation.
Safety and faults
Use the right escalation path.
The controller combines several functions. A quick reference is useful when it sends the reader to the right source. It should not replace the buttons, limits, and warnings in the current instruction for use.
If the question is about chamber order
Use the working modes guide for Sequence, Circulation, Whole, and the observable chamber pattern. Use the mechanism guide for the five-chamber air path.
If the question is about pressure
Use the pressure levels guide for L1, L2, and L3. Pressure is a device setting. It is not a medical protocol and should not be selected to test a diagnosis.
If the question is about heat or vibration
Use the heating modes guide for H1-H3. Keep warmth separate from air pressure. Vibration is another independent function. Record each setting separately when describing what happened.
If the question is about a stopped or incomplete session
Check battery state, charging status, tubing, sleeve position, and connectors. Then use the troubleshooting guide. Do not disassemble the controller or increase a setting to force a result.
A quick-reference rule for uncertain controls
If a label is unclear, pause before pressing several buttons. Check the manual’s control diagram and keep the controller within reach. A clear product question can usually be answered with the model, selected control, display message, and session state. A symptom question needs a safety path instead.
Keep the quick reference tied to the model
Control labels can vary between products. A button that means heat on one device may have a different role elsewhere. Confirm the model and use the current ST-504 instructions before relying on a remembered symbol. If the label remains unclear, record the display and pause rather than trying several settings.
A final check before pressing a control
Confirm the model, battery state, sleeve connection, and selected program. Keep the controller within reach. If the display remains unclear, pause and consult support. A quick reference should reduce uncertainty, not encourage trial-and-error changes.
Source boundary for control questions
Use the current manual for button meanings and operating limits. General FDA medical device information cannot choose a setting for an individual.
If the question is about suitability
Move to the safety and contraindications guide. New symptoms, wounds, recent procedures, reduced sensation, pregnancy, implants, and unexplained swelling require a safety decision rather than a control shortcut.
The panel can show product state. It cannot decide what a person’s symptoms mean.