The main advantages of the electronic time attendance machine are that it has no noise when it is not clocked in, and is small in size. The clock-in time attendance machine can automatically suck the card and return the card when the card is clocked in. The disadvantage is that the card sending device of the time attendance machine affects the service life. The main advantages of mechanical time and attendance machines are sturdy, durable, simple and intuitive, no computer knowledge, relatively low price, simple and convenient to install, the disadvantage is that the time and attendance machines are not accurate, the card slot is easy to be damaged, and the machine is not clocked in. There is noise in the time attendance machine of this kind of clock, and the card is entered manually, the statistics are cumbersome, and manual statistical reports are required. The clock attendance machine is suitable for large factories or units with a large number of people. The retail price ranges from 1,000 yuan to 3,000 yuan. At present, mechanical time and attendance machines are rarely seen in the market.
