The MR8880-20 model is manufactured by Hioki, and is a voltage data logger that captures high to low signals. It has a CAT III 600 V insulation performance that can measure directly 480 V power line.

The unit has 4 channels that are completely isolated to simultaneously record data on a 3-phase power line which is included with one extra channel. It is also appropriate for harsh conditions which can operate at a temperature of -10°C to 50°C.

Parameter Name	Parameter Value
Measured quantity	voltage
Connector type	USB
Display	with screen
Other characteristics	programmable