* Double road 20 connect port, two kinds of work frequency
* Double road nine the intelligent degree of classeses are adjustable, giving or get an electric shock the feeling to measure 50-1000 μ Hs
* double road repay outputs the mode 1 A30vpc after the electric appliances( No/ Nc)
* double road relay pulse outputs , width 300 milli- second
* The work power supply: AC220V±10% 50Hz
* The work temperature:-40 ℃-+65 ℃