Sensor Alerts quick reference
Device: MiniMed™ 670G insulin pump (MMT-1780K)
This table shows some of the most common alerts that you may receive when using continuous glucose monitoring (CGM).
NOTE: To silence an alert, press Down, and then press Select on the desired option.
| Alert | Reason | Steps to Take |
|---|---|---|
| Alert on high | Sensor glucose (SG) value is equal to or higher than the high limit that you set. | Do not treat your glucose based on SG. Confirm it using your Blood Glucose (BG) meter. Treat if necessary based on instructions from your healthcare professional and continue to monitor. |
| Alert on Low | Sensor glucose value is equal to or lower than the low limit that you set. | Do not treat your glucose based on SG. Confirm it using your BG meter. Treat if necessary based on instructions from your healthcare professional and continue to monitor. |
| Alert before high | Sensor glucose reading is expected to reach the high glucose limit in the length of time you set for the Time before high. | Do not treat your glucose based on SG. Confirm it using your BG meter. Treat if necessary based on instructions from your healthcare professional and continue to monitor. |
| Alert before low | Sensor glucose reading is expected to reach the low glucose limit within 30 minutes. | Do not treat your glucose based on SG. Confirm it using your BG meter. Treat if necessary based on instructions from your healthcare professional and continue to monitor. |
| Rise Alert | Sensor glucose reading is increasing at a rate that is equal to or faster than the Rate Limit that you set. | Do not treat your glucose based on SG. Confirm it using your BG meter. Treat if necessary based on instructions from your healthcare professional and continue to monitor. |
| Calibrate now | A calibration is needed in order to receive sensor glucose readings. | Enter BG value into your pump to calibrate. |
| Lost sensor signal | Communication between pump and transmitter has been lost for 30 minutes during or after warmup. | Check that the sensor is still inserted in the skin and the transmitter and sensor are still connected. Move your pump closer to your transmitter. |
| Calibration not accepted | You system was unable to use the BG meter reading you entered to calibrate your sensor. | In 15 minutes, your pump will prompt you to enter a new BG meter reading for calibration. Wash your hands and dry thoroughly before checking BG. |
| BG not received | The transmitter was unable to receive the calibration BG reading from the pump. | Move your pump closer to your transmitter and select OK. The pump will try sending the BG again. |
| Sensor expired | Sensor has reached its maximum usage of 7 full days. | Remove the sensor and follow the instructions for inserting and starting a new sensor. |
| Sensor updating | The sensor is updating. | Do not calibrate unless notified. This could take up to 3 hours. |
| Change sensor | You have received two calibration not accepted alerts in a row. | Remove the sensor and follow the instructions for inserting and starting a new sensor. |
| Cannot find sensor signal | The pump has not received a signal from the transmitter. | Disconnect and reconnect your transmitter and sensor and select OK. |