I am currently using an Altronix RBSN 12VDC relay to trigger an input on another system. The output to the relay has a constant 3V DC and sometimes up to 6V DC and increases to 12 VDC when in alarm. This is causing issues because the relay will at times, randomly change states or if triggered, the relay will hang on the voltage that is present. What would be the best way to allow only 10-12 VDC to the relay? A cheap off the shelf alternative would be preferred, as I am not that well versed in electronic components. Any help would be appreciated.