Metravi 500 mA ELCB Tester detects the stray voltages on the metal machinery and electrical equipment. It interrupts the high circuit, which can damage the components and may cause danger both to the user and machinery. 500 mA ELCB Tester measures the trip out of current by varying the draft of the device automatically. Once the device is attached to the device, a lock button is present in the tester to automatically start the device without holding the device. ELCB Tester is designed as per IP54 to protect against dust and water. Product Specifications- Brand- Metravi Model- 1812 Made in- India Operational Voltage- 230 C AC +/-10 percent 50/60 Hz Trip current settings- 500 mA Colour- Grey Knob- 1