A connection box comprising: a temperature sensor connector (336, 338) configured to connect to a temperature sensor cable connected to a temperature sensor assembly that is configured to detect a temperature of a workpiece being heated by an induction heating device; a power source connector configured to connect to a mating connector of a power source that is configured to generate output power for use by the induction heating device; and a circuit board comprising circuitry configured to: receive a first input signal from the temperature sensor assembly that is configured to detect a temperature of a workpiece being heated by an induction heating device; convert the first input signal into a first output signal suitable for use by a power source that is configured to generate output power for use by the induction heating device; and send the first output signal to the power source; characterized in that the connection box further comprises a travel sensor connector configured to connect to a travel sensor cable connected to a travel sensor assembly that is configured to detect a position, movement, or direction of movement of the travel sensor assembly relative to the workpiece; wherein the circuit board comprising circuitry configured to receive a second input signal from the travel sensor assembly that is configured to detect a position, movement, or direction of movement of the travel sensorassembly relative to the workpiece; and to send a second output signal corresponding to the second input signal to the power source; and wherein the connection box comprises a separate housing removably couplable to the power source, wherein the power source connector comprises a plurality of electrical lead connection blocks on a backside of the connection box configured to communicatively connect to a plurality of mating electrical lead connection blocks of the mating connector on an exterior of the power source. a temperature sensor connector (336, 338) configured to connect to a temperature sensor cable connected to a temperature sensor assembly that is configured to detect a temperature of a workpiece being heated by an induction heating device; a power source connector configured to connect to a mating connector of a power source that is configured to generate output power for use by the induction heating device; and a circuit board comprising circuitry configured to: receive a first input signal from the temperature sensor assembly that is configured to detect a temperature of a workpiece being heated by an induction heating device; convert the first input signal into a first output signal suitable for use by a power source that is configured to generate output power for use by the induction heating device; and send the first output signal to the power source; characterized in that the connection box further comprises a travel sensor connector configured to connect to a travel sensor cable connected to a travel sensor assembly that is configured to detect a position, movement, or direction of movement of the travel sensor assembly relative to the workpiece; wherein the circuit board comprising circuitry configured to receive a second input signal from the travel sensor assembly that is configured to detect a position, movement, or direction of movement of the travel sensorassembly relative to the workpiece; and to send a second output signal corresponding to the second input signal to the power source; and wherein the connection box comprises a separate housing removably couplable to the power source, wherein the power source connector comprises a plurality of electrical lead connection blocks on a backside of the connection box configured to communicatively connect to a plurality of mating electrical lead connection blocks of the mating connector on an exterior of the power source. receive a first input signal from the temperature sensor assembly that is configured to detect a temperature of a workpiece being heated by an induction heating device; convert the first input signal into a first output signal suitable for use by a power source that is configured to generate output power for use by the induction heating device; and send the first output signal to the power source; characterized in that the connection box further comprises a travel sensor connector configured to connect to a travel sensor cable connected to a travel sensor assembly that is configured to detect a position, movement, or direction of movement of the travel sensor assembly relative to the workpiece; wherein the circuit board comprising circuitry configured to receive a second input signal from the travel sensor assembly that is configured to detect a position, movement, or direction of movement of the travel sensorassembly relative to the workpiece; and to send a second output signal corresponding to the second input signal to the power source; and wherein the connection box comprises a separate housing removably couplable to the power source, wherein the power source connector comprises a plurality of electrical lead connection blocks on a backside of the connection box configured to communicatively connect to a plurality of mating electrical lead connection blocks of the mating connector on an exterior of the power source.