The AED Superstore has the Solaris NT1A handheld pulse oximeters! This unit has the configurable alarm (alarm sound rated at 45db at 1 meter).
Both durable and compact, the Solaris handheld pulse oximeter features bright, easy-to-read large LED displays and can be used for spot checks or continuous monitoring. Sensors for adult and pediatric patients are available, too.
The visual displays and indicators show SpO2%, pulse rate, pulse intensity, and low perfusion indicators. Audio indicators include sensor off, pulse beep, key presses, and low battery warnings. If you choose the NT1A model, you'll have alarms for high and low SpO2 and pulse rate (and you can adjust the limits), alarm silence intervals, low perfusion indicator, and sensor disconnect alarm.
The Solaris NT1A handheld pulse oximeter operates on four standard "AA" batteries (included) with a capacity of about 12 hours. 1-year manufacturer's warranty.