inductance current monitoring, security isolation of input and output, self power The range of the monitored current is up to 30A;the monitoring is adjustable within 0.2-30A. Hysteresis is less than 1%. It can be used instrong magnetic environment. Non-contact electronic switch with fast reaction and number of on-and-off operations. The shell is made of environmentally-friendly -retardant PC material. Monitoring current: 0.2-30A AC Contact capacity: 0.3A@240V AC\/DC The diameter of the perforation line: 10MM Dimensions: 65x25x47MM Maximum leakage value: 0.1MA Maximum overload capacity: 100% Operating temperature: -20-55Celsius Hysteresis: less than 1% 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 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 cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.