Multi-voltage contactors, controls, and related methods

A relay switch control configured for connection with one or more components and one or more line voltage sources, the relay switch control comprising:

• a processor;
• a relay operable by the processor to electrically connect or disconnect the one or more line voltage sources;
• and
• a control circuit configured to be coupled for communication with and/or transmit control signals to the processor;
• wherein the processor is configured to be operable for determining input voltage and adjusting brownout threshold;
• and
• wherein the relay switch control is configured to:
• at power up, determine a voltage level set within a memory;
• if the voltage level is set at a first voltage level within the memory, set the brownout threshold at a first brownout threshold;
• if voltage level is set at a second voltage level within the memory, set the brownout threshold at a second brownout threshold;
• and
• if voltage level is not set within the memory:
• monitor input voltage;
• determine if the monitored input voltage is stable within a first voltage range;
• set the voltage level at the first voltage level within the memory and set the brownout threshold at the first brownout threshold if the monitored input voltage is determined to be stable within the first voltage range;
• and
• set the voltage level at the second voltage level within the memory and set the brownout threshold at the second brownout threshold if the monitored input voltage is not determined to be stable within the first voltage range.