This current transform can be used to measure the working current of ac motor, lighting devices, air conditioner, washer and dryer, etc  

Specification:

• Opening: 13x13mm
• Nonlinearity: +/- 3% (10%-120% rated input current)
• Length of connector: 1 meter, with audio jack 3.5mm 
• The output can be in the form of current or voltage
• The opener can be open and close more than 1000 times (under 25 degree C).
• Temperature: -25 - 70 degree C
• Input current: 1- 5A, output voltage: 0-5V