Fixing Insufficient Voltage or Current

Fixing Insufficient voltage/current issues

dbell SD, dbell HD+ requires 12 to 24VAC.
Wired doorbell transformer with Input: 120VAC – Output: 16VAC-10VA provides sufficient power for the doorbell to operate. 8VAC-10VA is insufficient,  24VAC-20VA is excess or over.

dbell HD Live requires 10 to 24VAC.
Wired doorbell transformer with Input: 120VAC – Output: 16V-10VA provides sufficient power for the dbell to operate. 8V-5VA is insufficient,  24V-20VA is excess or over.

How do you know it has insufficient power supply?

If there is insufficient power, HD Live will keep re-starting

If there is insufficient power, dbell SD & dbell HD+, will work for few days or weeks and then it will fail. It will make humming noise.

Please make sure you follow this instructions to ensure dbell is getting the power directly bypassing the old indoor chime. Click here to see the pictorial.

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