Prefer one with 2 transmitters and 1 receiver for the aide. The Fisher price one we have now only has 1 round transmitter so it is not too practical. I am looking for something fairly easy to use. Up till now we have not used video but it might not be a bad idea when mom attempts to get up from her recliner without telling the aide first because she doesnt want to bother her. (Has happened a few times.) Mom has weakness in her legs, has had 2 strokes and has vascular dementia which ebbs and flows. Any suggestions? Also, are there little alarms that can be placed on the walker?