Possible Causes
Recommended Solutions
A red battery symbol displays on display screen.
Low Battery
Replace low batteries as soon as display screen. possible. (see Installing the AAA Batteries section in this manual)
Device does not display readings
Incorrect finger placement
Incorrect battery orientation
No battery
Low battery
Environmental influences
Wait for measurement (PVi may take up to 2 minutes before initial measurement)
Reposition finger (see Using MightySat® section in this manual)
Re-orient batteries
Replace with new batteries
Relocate device
Contact Masimo Technical Services
Device display does not turn on
No battery
Device damaged
Replace with new batteries
Contact Masimo Technical Services
Numbers appear dim
Low battery
Brightness set low
Exposed to bright lights or sunlight
Incorrect finger placement
Measurement site may be poorly perfused
Check battery status indicator and replace batteries if necessary
Check brightness setting in menu
Relocate device so that it is no directly under bright lights
Reposition finger (See Using MightySat section in this manual)
Choose different finger
Contact Masimo Technical Services
Device keeps turning off while on the finger
Incorrect finger placement
Environmental influences
Device damaged
Reposition finger (See Using MightySat section in this manual)
Relocate device
Contact Masimo Technical Services
Measurement does not display on the smart device
Bluetooth not connected
Compatible App not installed on smart device
Device damaged
Smart device damaged
Confirm Bluetooth is on for the MightySat and the smart device
Confirm the Masimo app is installed on the smart device
Close and re-launch Masimo app
Check that MightySat is paired to the correct smart device
Contact Masimo Technical Services
Operator’s Manual
Please contact Masimo Technical Services with any questions or assistance you may need regarding your Masimo Fingertip Pulse Oximeter. For customers in the USA, support is available at TechSupport-US@masimo.com or (800) 326-4890. For customers traveling outside the USA with their Masimo Fingertip Pulse Oximeter, local contact information can be found at http://service.masimo.com.
Device Compatibility
Compatible with iOS 10, 11, 12, 13, and 14: iPod Touch (5th generation), iPhone 4S, iPhone 5, iPhone 5S, iPhone 5C, iPhone SE, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone X, iPad Mini (1st generation), iPad Mini (2nd generation), iPad Mini (3rd generation), iPad Mini (4th generation), iPad 2 **, iPad 3, iPad 4, iPad Air, and iPad Air 2.
Compatible with Android Jelly Bean**, KitKat, Lollipop, and Marshmallow: Samsung Galaxy Note 10 (2014 edition), Samsung Galaxy Note 4, Samsung Galaxy Note 3, Samsung Galaxy Note II, Nexus 9, Nexus 7, Nexus 6, Nexus 5, Samsung Galaxy S6, Samsung Galaxy S5, Samsung Galaxy S4, Samsung Galaxy S3, Huawei Ascend Mate 7, Droid Mini, Motorola RAZR M, Xiaomi Mi4, Micromax Canvas Juice 2, Micromax Unite 3
*No support for Bluetooth LE which is required for MightySat.
**No support with Jelly Bean 4.1 and 4.2 which is required for MightySat.
PLCO-001098/PLMM-10534A-0717