Reef Angel Forum

Is it possible to use the lowATOPin for your buzzer, if you are using highATOPin for a real ATO? I've tried to initialize the value to LOW on startup and my buzzer is always going off... does something with using highATO (for real) cause the value on the low pin to be changed behind the scenes - or ...

Can you tell which version of dimming you have (analog vs pwm) from looking at the display unit's circuit board or is that controlled by your relay box?

Thanks.