The panic alarm is activated by entering telephone numbers via the APP under authorized numbers. When you hold down the panic button on your Pico for 3-4 seconds, it will call number 1. If number 1 does not answer, it goes to number 2. If number 2 does not answer, it returns to number 1 again. The cycle lasts for about 5 minutes or until someone answers. It is important to make sure that authorized numbers do not have an answering machine activated as the device cannot differentiate whether it is an answering machine or a person answering.