Built-in standalone CPU, quick calculating speed, and excellent stability
Non-polarity two-wire bus to make cabling easy, and avoid wrong wiring
Sounder/ visual indicator setting freely according to different environments.
With a super bright red LED, it features markedness, a long lifespan, and low consumption.
Special production process to make the device work at high temperature, high humidity and high altitude environment6.ESD static protection grade 12000V, strong anti-interference ability.