NT1 Handheld Pulse Oximeter has a bright, easy to read broad led display. Durable, solid and Lightweight. Used for Spot Check. Key Functions Alarm: Alarm IEC60601 1 8 2005 4. Safety Standards : Safety Standards EN 60601 1 1990+A1 1993+A2 1995+A13 1996 3. Physical Characteristics: Dimensions69mmx130mmx22mm Net Weight195g/100g Gross Weight495g/395g.Compliance 1. Transport/Storage: Temperature 40? 70? humidity ?95%. Power Requirements: Power Requirements Four StandardAA Size Batteries Battery Capacity?12 hours.Environment Operating Temperature Operation 0?50? humidity ?95% Altitude 390m 5000m. Pulse Beep pressing: Pulse Beep Key pressing Low Battery. Audio Indicators Sensor: Audio Indicators Sensor off Every 30 seconds. Perfusion Indicator: Red. Power Voltage: Power Voltage Red and Blink Low. Power Indicator Light: Power Indicator Light Green Low. Pulse Intensity: Pulse intensity Red LED 8 Bars. Pulse Rate Display: Pulse Rate Display Green LED, Variable brightness. Visual Displays: Visual Displays and Indicators Sp02 Display Red LED, variable brightness. Pulse Rate Measurement: Pulse Rate Measurement range 30 250 bpm skill 1 bpm or 2%. Compliance: 1. SpO2: ISO 9919: 2005(E) 2. Safety Standards: EN 60601-1: 1990+A1: 1993+A2: 1995+A13: 1996 3.