Power issues on the SPA901

From Asterisk Australia

Q. What are the power requirements for the SPA-901 to function well?

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For the SPA-901 to function well, make sure the following power requirements are met:

Switching Type (100-240v) Automatic
DC Input Voltage: 5 Volts DC at 2.0 Amps Maximum
Power Consumption: 5 Watts
Power Adapter: 100-240v - 50-60Hz (26-34VA) AC Input, 1.8m cord

Note: Ensure that your power adapters are plugged securely to the power port of the SPA-901 and are conforming to these specifications to eliminate possible power problems.