American Diagnostic Corporation (ADC) 421 Adtemp User Manual
Page 6
Blank display: Please check if the battery has been loaded correctly. Also check po-
•
larity (+ and -) of batteries.
Dead battery indication: If the steady battery icon is the only symbol shown on the
•
display, the batteries should be replaced immediately.
9. Cleaning and Disinfecting
Use an alcohol swab or cotton tissue moistened with alcohol (70% Isopropyl) to clean the
thermometer casing and the measuring probe. Ensure that no liquid enters the interior of
the thermometer. Never use abrasive cleaning agents, thinners, or benzene for cleaning and
never immerse the instrument in water or other cleaning liquids. Take care not to scratch
the surface of the probe lens and the display.
10. Battery Replacement
This instrument is supplied with one lithium battery, type CR2032. Replace with a new
CR2032 battery when the flashing battery symbol appears on the display. Remove the bat-
tery cover by sliding it downward. Remove the battery and replace with a new one.
11. Warranty
This instrument is covered by a 2 year warranty from the date of purchase.
• The warranty covers the instrument and the batteries. The packaging is not in-
cluded.
• Opening or altering the instrument invalidates the warranty.
• The warranty does not cover damage caused by improper handling, discharged bat-
teries, accidents or non-compliance with the operating instructions. Contact ADC® Cus-
tomer Service Dept. for more information.
12. Technical Specifications
Type:
Ear Thermometer 421
Measurement
Range:
32.0°F to 212.0°F - 0°C to 100.0°C
Resolution:
0.1°F/°C
Measurement:
Laboratory: ±0.4°F, 86.6 ~ 108.0°F
Accuracy:
±0.2°C, 32.0 ~ 42.2°C
Display:
Liquid Crystal Display, 4 digits plus special icons
Acoustic:
The unit is turned ON and ready for the measurement:
1 short beep
Complete the measurement: 1 long beep
System error or malfunction: 3 short beeps
Fever alarm: 10 short beeps
Memory:
Auto-Display the last measured temperature
12 readings recall in the Memory Mode
Operating temperature:
41.0°F to 104°F (5°C to 40°C)