Light-emitting diode control circuit having: - a voltage monitoring circuit for a light-emitting diode arrangement of a signal transducer of a light signal installation, comprising: - a light-emitting diode interface for connecting the light-emitting diode arrangement to the light-emitting diode control circuit , - a first voltage divider , which is connected parallel to the light-emitting diode arrangement , - a reference voltage source with an input and at least a first output and a second output , - a first comparator circuit with a first input , a second input and a signal output , wherein the first output of the reference voltage source has a reference potential (U ref ) defined by the reference voltage source and is electrically connected to the first input of the first comparator circuit , the second input of the first comparator circuit is connected to a tap of the first voltage divider and a safety circuit , which is electrically connected to a signal output of the voltage monitoring circuit , characterised by - a second comparator circuit with a first input , a second input and a signal output , wherein the first input of the second comparator circuit is connected to the first input of the first comparator circuit , the second input of the second comparator circuit is connected to a tap of a second voltage divider , - the signal output of the first comparator circuit and the signal output of the second comparator circuit are electrically interconnected on a shared signal line (SL) and form a wired OR circuit, and - the safety circuit can be moved into a switch-off state by a switch-off signal (AS) on the shared signal line (SL), by means of which the light-emitting diode can be switched off. - a voltage monitoring circuit for a light-emitting diode arrangement of a signal transducer of a light signal installation, comprising: - a light-emitting diode interface for connecting the light-emitting diode arrangement to the light-emitting diode control circuit , - a first voltage divider , which is connected parallel to the light-emitting diode arrangement , - a reference voltage source with an input and at least a first output and a second output , - a first comparator circuit with a first input , a second input and a signal output , the first output of the reference voltage source has a reference potential (U ref ) defined by the reference voltage source and is electrically connected to the first input of the first comparator circuit , the second input of the first comparator circuit is connected to a tap of the first voltage divider and a safety circuit , which is electrically connected to a signal output of the voltage monitoring circuit , characterised by - a second comparator circuit with a first input , a second input and a signal output , - a second comparator circuit with a first input , a second input and a signal output , wherein the first input of the second comparator circuit is connected to the first input of the first comparator circuit , the second input of the second comparator circuit is connected to a tap of a second voltage divider , - the signal output of the first comparator circuit and the signal output of the second comparator circuit are electrically interconnected on a shared signal line (SL) and form a wired OR circuit, and - the safety circuit can be moved into a switch-off state by a switch-off signal (AS) on the shared signal line (SL), by means of which the light-emitting diode can be switched off. - the signal output of the first comparator circuit and the signal output of the second comparator circuit are electrically interconnected on a shared signal line (SL) and form a wired OR circuit, and - the safety circuit can be moved into a switch-off state by a switch-off signal (AS) on the shared signal line (SL), by means of which the light-emitting diode can be switched off. <EOS>