- Numbered counting clock, 2 units of measurement of 9,999s and 99,99s, least count of 0,001s.  

- 5 working modes : A, B, A+B , A<-->B, T, changed by switching     

- 2 pieces of 5-pin electric socket A and B connecting to photoelectric gate or electromagnet, 1 pieces of 5-pin electric socket supplying power to the magnet.          

-Measurements displayed continuously during counting time. Insulated plastic shell.     

- A switch box: K buttons attached to protective boxe,  1 socket end, 1 end of  1m signal wire  with 5-pin plug