Is this kit suitable for control by an open collector output (12v/100mA)?. I am searching for a kit suitable to detect a -ve switched open collector output, that will delay the triggering of the relay by around 30 to 60 seconds. If the input is switched +ve before the timer expires the relay must not activate.
Please can you advise if the MK111 is suitable for this project or suggest an alternate kit.
The MK111 is an interval timer which means that it loops forever, with adjustable on and off times. What you need is a delayed turn-on timer circuit. Please check the manual of the K8015 kit . It features lots of timing modes. Maybe there is one that suits your application. http://www.velleman.be/downloads/0/illustrated/illustrated_assembly_manual_k8015.pdf