Led module with sleep mode and led light string having the same

An LED module with sleep mode, comprising:

• a detection circuit configured to receive a lighting drive signal through a power wire,
• a driver circuit coupled to the detection circuit and configured to receive the lighting drive signal, the driver circuit comprising:
• a control unit coupled to the detection circuit, and
• at least one LED coupled to the control unit,
• wherein the control unit receives a lighting command according to the lighting drive signal and controls lighting behaviors of the at least one LED according to the lighting command;
• when the driver circuit detects the voltage of the lighting drive signal decreases below a first threshold value, the driver circuit performs signal identifications of the lighting drive signal, and when the signal identifications of the lighting drive signal are completed, the driver circuit changes from a working mode to a sleep mode;
• when the voltage of the lighting drive signal decreases below a second threshold value, the driver circuit slows down the discharge speed of the lighting drive signal.