Under normal circumstances, this product can be used for 10 years.
≥85 dB(A) at 3 meters.
It may be that the concentration of smoke has not yet reached the alarm threshold. Simulating smoke yourself can easily cause a fire. For your safety, we recommend that you use our Test function to test the equipment.
Install the bracket on the product (a short chirp will be heard when the installation is successful), press and hold the Test button, and then you will hear a chirp sound, which means that the alarm is working normally. If it does not sound, it may be an internal failure of the alarm, you can contact https://www.meross.com/support/Email_Support. You don't need to simulate the smoke test equipment yourself.
Sorry, this alarm does NOT support this function. But we have a smart smoke alarm that supports this function, the model is GS559A, you can search it.