The batteries should be placed in the unit with a positive end, and a negative end facing into a spring. Although the springs are on the same side, the batteries still need to face opposite polarities.
If your oximeter is displaying probe off, it means that it may not be recognizing a finger in the unit, since it is expecting a probe to be attached. At this point, if probe off does not go away, the unit may be malfunctioning. If under warranty, a replacement can be issued.
You can register your product online or by mail.
• Online- Visit http://choicemmedamerica.com/product-registration/ - You must fill out all fields indicated with a (*). If you do not have an email address, you cannot register online.
• By Mail – Refer to the operator’s manual which has the limited warranty registration card attached. Make a copy of your sales receipt and mail it along with the registration card to: o ChoiceMMed, 2558 Pearl Buck Road Suite 8A Bristol, PA 19007