Pulse Oximeter with Alarm is designed for both desktop and handheld use. The Pulse Oximeter can operate on the temperature rate of 5 degree C to 40 degree C. The Pulse Oximeter is available in the dimension of 9.6" X1.6" X 3.3". The Pulse Oximeter with Alarm functions in power supply of 100 to 240VAC, 50/60Hz.