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1. RED LED display
2. Memory function at subtraction
3. Multifunction intelligent meter , used as counter frequency meter speed meter etc by pressing four key (thirty type)
4. Manifold relay output fashion
5. If the meter must won be used of a long time, please connect power supply once every three month, not less than 4 hours each time.
6. Store the meter in the shade with non high light-line with temperature of -10 to +700, and humidifies of less than 60%. Dont contact with organic solvents or gas.