Could I also suggest that you look into the Ring ecosystem?

The monthly plan is cheaper, and for the same low price you get video integration for their camera and door bell products.

Ring as a company seems to continually advance their products with software updates. Some recent updates allow you to configure the cameras and lights to work together with your alarm system. Alarm goes off, all lights go on and all cameras begin recording. Or, set it so that indoor and backyard cameras are only allowed to record when you are away and the alarm is armed.

Their latest product drop is a mesh router system paired with the Alarm base station with a built in cellular data plan, which allow your security cameras to continue recording even if the power and internet goes out. The basic Alarm system (without the cellular router) still has a a cellular antenna for regular alarm monitoring, but it's just an example of continuous product improvement.

Also, with the monthly alarm fee, you get Ring's extended warranty (and very good customer support). So long as you are paying the monthly alarm and video monitoring fee, your devices are covered under warranty. I've had two outdoor cameras that have failed outside body their regular warranty (being in continuous use for like 5 years now) that have been replaced promptly with just a phone call.

All the contact and motion sensors look nice, and are powered with readily available CR123 lithium cells and last for years.

Thanks for all your help.
New system ordered and after it is installed, new monitoring set up and tested, good by old system and cancel the old system monitoring.