Radiator detecting device

A radiator detecting device, which is disposed on an opening of a radiator, comprising:

• a radiator cap;
• a sensing unit, comprising a combining end and a sensing end, the combining end being connected to the radiator cap, the sensing end extending toward a direction away from the radiator cap, the sensing end being received in the radiator when the opening of the radiator is covered by the radiator cap;
• an adjusting means for adjusting a length of the sensing unit received in the radiator, the sensing unit being movable with respect to the radiator cap between a first position and a second position;
• a circuit device, comprising a power connection device and a circuit board, the power connection device being adapted to connect a power supply, the circuit board comprising a control circuit, the control circuit being electrically connected to the sensing unit, the control circuit being adapted to detect a state of the sensing unit, the sensing unit selectively making the control circuit generate a suggestion signal;
• an warning device, connecting electrically to the control circuit, the warning device generating a warning signal when receiving the suggestion signal from the control circuit.