Part Number: Short pro tool can quickly find the short circuit point in the 24V circuit, when the light is on, there is a short circuit, when the light is not on, the circuit is normal Function: Once there is a short circuit, the power supply will be cut immediately to protect the sensitive element Easy to carry: The compact design can be used in any scenario Size: The lead length of the Short pro tool finder is 12 inches If you have any questions, please leave us a message by logging into your Amazon Buyer account and we will get back to you within one business day.