| Standby mode | After the product is installed, if the alarm device is operating properly, the green LED Flashes once approximatelyevery 50 seconds. |
| Alarm mode | When the carbon monoxide alarm detects the carbon monoxide and the carbon monoxide concentration reaches the alarm threshold, the LCD show "Hco", the red LED flashes once every 0.8 second with the alarm sound of pulse type until the carbon monoxide disappears. |
| Low battery mode | When the battery voltage is low than threshold, the battery symbol will blank display on LCD. An intermittent "chirp" with yellow LED flashes once every 50 seconds. |
| Fault mode | When the alarm detects signal abnormal, the LCD show "Err",The yellow LED of the alarm will flash twice approximately every 50 seconds and the horn will synchronize two "squeak" calls. |
| End of life | When the alarm is switched on for 10 years, the LCD show "End", The yellow LED of the alarm will flash three times approximately every 50 seconds, and the horn will synchronize three times"squeak" calls. |
| Silence mode | When the alarm is on, pressing the test button and the alarm will stop for about 8 minutes.At this time, red LED and green LED flash once synchronously every 8 seconds. |
| Test mode | Test the unit to ensure proper operation by pressing and releasing the test button. At this time, the red LED will flash once per 0.8 second with pulsating alarm until test button is released. |
Complaint
