inductance current monitoring, security isolation of input and output, The range of the monitored current is up to 30A the monitoring is adjustable within 0.2-30A. Hysteresis is less than 1 percent . It can be used instrong magnetic environment. Non-contact electronic switch with fast reaction and unlimited number of on-and-off operations. The shell is made of environmentally- -retardant PC material. Monitoring current: 0.2-30A AC Contact capacity: 0.3A 240V AC or DC The diameter of the perforation line: 10MM Dimensions: 65x25x47MM Maximum leakage value: 0.1MA Maximum overload capacity: 100 percent Operating temperature: -20-55Celsius Hysteresis: less than 1 percent Operating principle: Normally closed: M3056 When the current of the perforation line exceeds the set value, the green light turn on and the output signal open when the current is below the set value, the red light turn on and the switchs . Colour:As shown Material:plastic Package Contents: 1 x Current detection switch induction relay Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.