There is a tab on the front for lock placement

Fever alarm tells you when a fever is present

The rigid teeth of the WelComb hold tight when they encounter a nit

ONLY for use with the 690 and 692 model

The 3M Littmann Lightweight II S

Tempa-Dot Single-Use Clinical Thermometers (100-ct) SF25 There is a tab onTempa dot thermometers are single use, disposable, clinical thermometers that can measure oral or axillary body temperature. Individually wrapped which prevents cross contamination between patients. They are simple, accurate and take a temperature in 60 seconds. Tempa dot thermometers help taking a temperature easier for the busy days nurses face. Latex free.