Where can I find alarms for a nearly deaf caregiver?

I added an additional lock on the door and keep the key with me at all time. I also installed ADT (or equivalent burglar alarm system). When it goes off, it is hard to not notice.

Freqflyer, Thank you for your response. I just found that Val-U-Care carries a wireless mat for the system I have. But I would not have thought to check without your help. I was looking for a different locking mechanism for our sliding patio door. Plus, I found they have another accessory that will turn on a light should she get up in the dark. I have been using battery operated lights for that but it bothers her because of its location, right next to at the head of the bed. And it too will work with the system I already have.
Logan179, Thank you also for your continued searches. All of the help has helped me get my mind going with something besides worry about her.
She is slipping deeper into this monster. She cannot form a sentence longer that three or four words, if she is lucky. Plus English is not her original language and I don't know enough of it to be of much help but, I try and we are still going.
And to anyone I may have missed, THANK YOU as well.
And to Ashley White for helping me get my log in fixed.

The Navy has term for all of the good work. "Bravo Zulu", it means a job well done to all who participated and it fits here.

OldSailor, I read this idea in an article about Alzheimer's/dementia. If you place a black throw rug on the floor inside the front of an exterior doors, the person who has Alzheimer's/dementia would be afraid to step on that rug thinking it is a hole in the floor.

It's something to try under a whole house alarm system is found. Or for those who are caregivers that find such alarm systems too complex to use. No guarantee the black rug will work.

another update, the Bellman & Symfon product is not available in North America yet so I went with the Serene Innovations CentralAlert system.

OldSailor, sounds good! Glad I could help.

Logan179, I read another post from a person that needed a longer range than most systems cover. She had her business on the parents property but the shop was about 1600 feet away and this company has a system the will cover up to 600 meters, that is over 1800 feet.
Let's see if we can find that person and let her know about the one from Bellman and Symfon.

Thanks again for your help.

I found one with a company that provides alarms for care facilities. It is expandable to motion sensors, bed alarms, chair alarms, and door alarms.
There is a central alarm that will transmit to a pager, which I carry all of the time, from any of the transmitters. I have put alarms on on the doors. The door monitors do not make a noise so as not to cause the patient any distress but sounds the central unit as well as the pager.
I figure if she gets worse I can expand it to include bed alarm and a mat alarm for the shower since she no longer knows how to adjust the temp and may not remove her clothing to bathe.
I does not have a cabinet alarm to prevent her from getting into the meds but I have found cabinet locks and will order them soon.
I also installed Flip Locks on the doors so I can take a bath and relax. She escaped once and I found her about a mile away sitting at a traffic light. I unlock the flip locks for safety should an emergency occur.
Thanks you for your replies.

I saw a system that has this watch like bracelet part that you wear. If an alarm is set off, phone, call button, fire alarm etc the bracelet would wake you. Bellman and Symfon is the name of the company. There may be a few others out there.

I have looked at hundreds of them. The alarms and announcer for the deaf are nearly all for a door bell or are mounted in conjunction with a door bell ringing/phone ringing as the signaling device. So far I haven't seen much in the way of an item that produces an alert as loud as I need. Without my aids and asleep it would have to be at least 100 decibels. And since that is considered damaging to most peoples hearing, they do not produce much. Patient alarms deal with bed and fall or maybe a wet bed. Or motion alarms.
Thanks for the suggestion.

Yes, a chain guard on the door is a good idea.

I would look into the alarms that are used by the deaf. They cannot hear bells and alarms, their systems include flashing high intensity lights and vibrating devices.