Light-emitting diode control circuit having: - a voltage monitoring circuit (19, 29) 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 (19, 29), 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 and form a wired OR circuit, and - the safety circuit can be moved into a switch-off state by a switch-off signal on the shared signal line, by means of which the light-emitting diode can be switched off. - a voltage monitoring circuit (19, 29) 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 (19, 29), 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 and form a wired OR circuit, and - the safety circuit can be moved into a switch-off state by a switch-off signal on the shared signal line, 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 and form a wired OR circuit, and - the safety circuit can be moved into a switch-off state by a switch-off signal on the shared signal line, by means of which the light-emitting diode can be switched off.