The meter uses one high performance MSP430 series microprocessor made by Taxes Instruments, with high accuracy, wide range, low-cost, easy to use, no mechanical moving parts, etc.

Battery than 1% accuracy.
0.2% of repeatability.
Positive/negative/net flow or heat totaliser.
2 line LCD display.
MODBUS/HIPEAK protocol.
RS-485/OCT/4~20mA output.
4~20 mA /PT100 platinum resistance input.
Power supply by 24 VDC or 220 VAC.