Place this script in mikrotik router RoS > system > scripts and set a scheduler to run the script every 120 seconds. Use the terminal to create the prevSlot global variable before you run the script so it is initialized: global prevSlot "1"; Requirements: Running Cardano Node with Prometheus installed see: https://www.coincashew.com/coins/overview-ada/guide-how-to-build-a-haskell-stakepool-node/part-iii-operation/setting-up-dashboards https://prometheus.io/docs/introduction/overview/
To increase utility you can use SMTP (email) alert system by configuring the email settings in > tools > email and modifying the last else{} statement to trigger an email alert using this mail server.