How to get notification for sensor alarm using openhab2

[rlkoshak (Rich Koshak)]

Review the Design Pattern Postings. In particular:

Design Pattern: Separation of Behaviors

Edit: Updated for OH 4. Please Design Pattern: What is a Design Pattern and How Do I Use Them for more information on what a DP is and how to use them. Problem Statement Often one will have certain cross cutting code that is used across a many diverse and varied collection of Rules. Such code can include things like calculating time of day to control the behavior of a rule, sending alerts, calculating state to drive a state machine, etc. For example, Lighting, blind/rollershutter controls and …

Design Pattern: Sensor Aggregation

Please see Design Pattern: What is a Design Pattern and How Do I Use Them for an explanation of what a DP is and how to use them. Problem Statement There are often times where one has a number of sensors of different types which aggregate up to a single status value. The most common of these is presence detection, where one has multiple sensors (PIR, Bluetooth, Network, etc.) any one of which can indicate someone is home (or at least their device is home). Another use for this is rolling up the…