Description
OMRON MC-523 Ear Thermometer is a compact and easy-to-use infrared thermometer designed for fast, non-invasive measurement of body temperature through the ear. It detects infrared heat from the eardrum and surrounding tissue, allowing users to obtain a temperature reading in approximately 1 second.
The MC-523 features a small probe designed to make ear measurement convenient, including for infants. It also automatically adjusts temperature according to the surrounding environment, helping provide consistent measurements under different conditions.
With 9-reading memory, users can recall previous temperature measurements to help monitor changes over time. The thermometer also includes a fever alarm that provides an audible warning when the measured temperature reaches the specified fever threshold.
Key Specifications
- Brand: OMRON
- Model: MC-523
- Product Type: Infrared Ear Thermometer
- Measurement Method: Infrared / tympanic measurement
- Measurement Site: Ear
- Measurement Range: 34.0°C–42.2°C (93.2°F–108.0°F)
- Accuracy: ±0.2°C (±0.4°F) from 35.5°C–42.0°C; ±0.3°C (±0.5°F) outside this range
- Measurement Time: Approximately 1 second
- Display Resolution: 0.1°C / 0.1°F
- Temperature Unit: °C / °F selectable
- Memory: 9 temperature readings
- Display: Large LCD
- Fever Alarm: Audible alarm at approximately 37.5°C (99.5°F)
- Temperature Correction: Automatic environmental temperature correction
- Battery: 1 × CR2032 lithium button battery
- Battery: Replaceable
- Dimensions: Approximately 151 × 39 × 54 mm
- Weight: Approximately 69 g including battery
- Probe Covers: 21 included
- Automatic Power-Off: Yes
Key Benefits
Fast 1-Second Measurement
The MC-523 can provide a temperature reading in approximately 1 second, making it particularly convenient when measuring children or anyone who may have difficulty remaining still for long periods.
Non-Invasive Ear Measurement
The thermometer measures temperature through the ear, eliminating the need for prolonged oral or underarm contact and providing a convenient method for routine temperature checks.
Suitable for Infants and Children
The MC-523 features a relatively small probe designed to facilitate ear measurement, including use with infants.
9-Reading Memory
Up to 9 previous temperature readings can be stored and recalled, making it easier to track temperature changes over time.
Fever Alarm
An audible alarm alerts the user when the measured temperature reaches approximately 37.5°C (99.5°F), providing a convenient indication that the temperature is elevated.
Large LCD Display
The large display makes the temperature reading easy to view and read during measurement.
Automatic Temperature Correction
The thermometer automatically adjusts according to the surrounding environment, helping account for environmental temperature differences during measurement.
Replaceable Probe Covers
The MC-523 supports replaceable probe covers, helping maintain cleanliness and hygiene when the thermometer is used by multiple people. The listed package includes 21 probe covers.
Celsius and Fahrenheit Selection
Users can select between °C and °F, making the thermometer convenient for different preferences and regions.
Compact and Ergonomic Design
Its ergonomic shape is designed for easy handling, while the approximately 69 g weight makes it convenient to carry and store.
Automatic Power-Off
The automatic power-off function helps conserve battery power when the thermometer is not being used.
Ideal For
The OMRON MC-523 Ear Thermometer is suitable for:
- Babies and infants
- Children and adults
- Parents and caregivers
- Home temperature monitoring
- Clinics and healthcare facilities
- Doctors and nurses
- Pharmacies
- First-aid and medical kits
- Routine fever monitoring
- Travel and portable healthcare use









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