Probe on/offline test: Online test after the motherboard capacitor is discharged, it is strictly forbidden to test when the motherboard is powered off, and the optocoupler can also be disassembled and tested offline. It uses Type-C interface, built-in battery, rechargeable, and replaceable probes. Three test methods: plug-in test pad, patch test pad, probe on/offline test. Patch test pad: The maximum testable patch optocoupler is 7.6 (excluding pins)x3.6mm, and the minimum testable patch optocoupler is 3.8 (excluding pins)x2mm. Applicable to 4-pin optocouplers, other types of optocouplers are for the time being., Weight: 0.02645547144 pounds, Manufacturer: Frewurwer