Power supply: AC100~240V or DC12~24V.

Display method: 4-bit, 7-segment LED digital display.

Measurement accuracy: DC type 0.1 level, AC type 0.3 level.

Maximum allowable input: 110% F.S of input specification.

Sampling period: 50ms（DC) , 16.6ms（AC 60Hz).

Measurement objects: AC current, AC voltage, AC frequency, DC current, DC voltage, analog sensor signals.

Display range: -1999~9999 (4 digits) (freely defined).

Decimal Point: up to 3 decimal places (optional) .

Alarm output: up to 3-way alarm relay output.

Variable output: 4~20mA variable output.

Communication function: RS485 communication interface, MODBUS-RTU communication protocol.