Spot wholesale manufacturers accumulate regressive cement loading a down counter types, according to whether the counter while the trigger flip classification, can be divided into synchronous counter and asynchronous counter counter counter flour two kinds of packets smart meter. 2, according to the changes in classification of digital counting process, but also to counter the counter into the addition, subtraction counter and reversible counter, clocked signal for adding counter growing, declining for the down counter, called the increase can be reduced reversible counter. In addition there are many classification does not enumerate, but the most common is the first classification, because this classification can make a glance, know what triggers this counter in the end the way for the designer to design the circuit. Applications counter applications include calls, SMS, data and other types of records, and allows users to choose the clearing date, and add reminders value by category, such as the user can select any one day, or the first day of the month, the last day of a record clearing day cycle, while adding talk time, the number of text messages, the number of data traffic reminder nodes. Function parameters: Display: LED count range: 0-999999 input signal: contact and pulse signals Control: Relay contact load: AC250V 3A DC24V 5A Power supply: AC220V, AC110V, AC24V, DC12V (when ordering is what kind of power) Auxiliary Power Output: 12V Operating Temperature: 0 + 50 degrees (relative humidity of 45% -75%) anti-jamming capability: IEC801 3G Panel size: 48mm × 96mm Hole Size: 45mm × 92mm Features: Counting speed Optionally, four kinds of output options can be positive or inverse count, compiled adapter is rotating. Two-stage output