Suggestion for RH DESIGNS ZONEMASTER IIm Power Supply

VTLD said:

Key is correct polarity, correct voltage and MIN indicated amperage. So in your case you have one that says 9V / 300mA, that's fine, in fact better than 100mA. I would in fact go even higher like 500mA. But check polarity. It should be shown on Zonemaster at power socket and needs to be same as one you see on PS (center negative on your PS, but maybe the other way around on Zonemaster )

Click to expand...

amellice said:

So I think from their manual, seems that what I have should work since the center pin is positive

For optimum performance and reliability we suggest you use only a regulated DC power supply capable of supplying 7.5v or 9v at 100mA. If you have a suitable power supply it should be set to 7.5v or 9v DC, centre pin positive, and the connector is a 2.1mm type.​

Click to expand...

VTLD said:

No YOu have center pin negative.

THIS will work well. It has 1A rating even better. You see a choice of center polarity, make sure you choose center-positive when ordering.

Click to expand...