BeneVision N Series Patient Monitor Operator’s Manual D - 5
D.2.4 SpO
2 
Technical Alarm Messages
D.2.5 Temp Technical Alarm Messages
Alarm message Default priority
Indication on 
alarm reset
Cause and solution
SpO2/SpO2b Sensor Off Adjustable B The SpO
2
 sensor has become detached from the 
patient or the module. Check the sensor 
connection. If the alarm persists, replace the 
sensor.
SpO2/SpO2b No Sensor Low A The SpO
2
 extension cable is detached from the 
SpO
2
 module, or the SpO
2
 sensor is detached 
from the SpO
2
 extension cable. Check the SpO
2
 
cable and the sensor connection. If the alarm 
persists, replace the sensor.
SpO2/SpO2b Excess Light Low C Ambient light is too strong. Move the sensor to a 
place with lower level of ambient light or cover 
the sensor to minimize the ambient light.
SpO2/SpO2b No Pulse Low C The SpO
2
 sensor failed to obtain pulse signal. 
Check the patient’s condition and replace the 
sensor application site. If the alarm persists, 
replace the sensor.
SpO2/SpO2b Sensor 
Incompatible
Low C Incompatible or an unspecified SpO
2
 sensor is 
used. Use specified sensors.
SpO2/SpO2b Low Signal 
Quality
Low C 1. Check the sensor and sensor position.
2. Make sure the patient is not shivering or 
moving.
3. The patient’s pulse may be too low to be 
measured.
SpO2/SpO2b Interference Low C The SpO
2
 signal has been interfered. Check for 
any possible sources of signal noise and check 
the patient for excessive motion.
SpO2/SpO2b Sensor Error Low C Replace the sensor and measure again.
SpO2/SpO2b Searching 
Pulse
Prompt / SpO
2
 is searching for pulse.
SpO2/SpO2b Low 
Perfusion
Prompt / The SpO
2
 sensor is not properly placed or the 
patient’s perfusion index is too low.
1. Check the sensor and sensor position.
2. Reposition the sensor if necessary.
Alarm message Default priority
Indication on 
alarm reset
Cause and solution
T1/T2 Sensor Off Low A Check the sensor connection and reconnect the 
sensor.
TempIF Ambient Temp 
High (for tympanic 
thermometer) 
Low A The ambient temperature is too high. Move the 
patient to a cooler place and take temperature 
measurement again if necessary.
TempIF Ambient Temp 
Low (for tympanic 
thermometer)
Low A The ambient temperature is too low. Move the 
patient to a warmer place and take temperature 
measurement again if necessary.
TempIF Overrange (for 
tympanic thermometer)
Low C The temperature measurement exceeds the 
measurement range. Check the patient’s 
condition.