Probe Covers for Welch Allyn SureTemp® Plus 690 Electronic Thermometer - Probe Covers for Welch Allyn SureTemp® Plus 690 Electronic Thermometer quantity + Request Quote SKU: 111-05031-105-X Category: Accessories Description Description Disposable. Related products Heine XHL® Xenon Halogen Bulb Request Quote Welch Allyn® Replacement Bulb Request Quote Welch Allyn® Replacement Bulb Request Quote