Hi guys just wondering of i can add a H100 to a H500 or will there be conflicts?

I have today set up 2x t110's as my Autistic son likes to escape from the house even though we try to keep the keys out of reach he somehow manages to find a way to get the door keys, 

My h500 is in my bedroom and ive set up the alarm automation which it does go off but being upstairs its not that loud and having young children in the house and when they are playing games ect on their devices I won't be able to hear it. 

I do have Alexa's around my house but can seem to get it to play siren sounds but ive managed to get them to play announcements. 

Can I add a h100 to my ever growing tapo network to use as a downstairs alarm or will it cause conflicts with the H500?