Automatic ear / forehead switching
Sensing the magnetic probe cover puts the device into ear mode when uncovered and back to forehead mode when covered. Every measurement uses the correct algorithmic parameters.
Connected Thermometers
RPM Core AOJ-20A Lite Infrared Thermometer
Model AOJ-20A Lite
Patented AMS™ automatic mode switching with simplified one-touch operation.
Overview
AMS™ automatic mode switching removes the last manual step in infrared thermometry. The magnetic probe cover tells the AOJ-20A Lite which algorithm to run: take the cover off and it is in ear mode, put it back and it returns to forehead mode. Nothing has to be selected, which means a caregiver, a patient and a night-shift nurse all get the same measurement discipline from the same device.
Patented AMS™ technology
Two sites, one instrument
Both ear and forehead temperature from a single compact device, giving a broader view of patient status without a second piece of equipment.
A display that states the result
- Tri-colour backlight: green for normal, orange for low fever, red for high fever
- Readable in a dim room, which is where night-time checks actually happen
- Multi-memory recall records historical measurements so clinicians can follow progression
One-click operation
Rapid one-second measurement
A result in about a second, from either site, without changing settings.
One-touch, one-handed design
Engineered for seniors and families with children — every operation completes with one hand.
Simple measurement
One button, minimal learning curve
Clear, easy-to-read display
Device and data management
RPM ecosystem compatibility
Supports integration with the RPMCore ecosystem for continuous tracking of temperature trends.
Continuous trend record
Historical measurements stay retrievable, so a rising baseline is visible before it becomes an event.
Integration-ready
A fit for hospitals, clinics and RPM distributors building a thermometer into an existing kit.
Clinical and home use
Clinical accuracy with a home-care interface — one SKU serves both settings.
Specifications
| Model | AOJ-20A Lite |
|---|---|
| Measurement mode | Dual-mode infrared: ear and forehead, switched automatically by the magnetic probe cover (AMS™) |
| Measurement range | 32.0–42.9 °C (89.6–109.2 °F) |
| Accuracy | ±0.2 °C within 35.0–42.0 °C |
| Resolution | 0.1 °C |
| Measurement time | Approx. 1 second |
| Display | Tri-colour backlight — green normal, orange low fever, red high fever |
| Memory | Multi-reading recall of previous measurements |
| Connectivity | Integrates with the RPMCore ecosystem; Bluetooth gateway option |
| Power | 2 × AAA alkaline, DC 3 V |
| Dimensions | Approx. 160 × 40 × 42 mm |
| Weight | Approx. 80 g (with cells) |
| Operating conditions | 10–40 °C, 15–85% RH |
| Storage conditions | −20–55 °C, 10–95% RH |
| Ingress protection | IP22 |
| Auto power-off | 30 seconds after last operation |
| Classification | Type BF applied part, internally powered |
| Standards | ISO 80601-2-56, ISO 13485, CE, RoHS |
AMS™ automatic mode switching is a patented AOJ mechanism driven by a magnetic probe cover. Clinical accuracy stated in the released specification sheet issued with the quotation.
Related devices
Connected Thermometers
RPM Core AOJ-20F Pro Infrared Thermometer
AOJ-20F Pro
Dual-mode infrared thermometry for rapid, clinical-grade monitoring across all age groups.
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