It is equipped with dual relays and can control two devices at the same time. It can also independently control alarms, motors, circuit breakers, inverters, solenoid valves, etc. to meet your various needs. The meter can be connected to an alarm, and once the preset value is reached, the alarm will automatically trigger and automatically reset. It has a power-off memory function, which can retain the measurement data even if there is a sudden power outage during This digital meter has a counting range of 0 to 999999 and can be used to measure large products in various factories. Heat dissipation holes: The heat dissipation holes of the machine allow heat to dissipate quickly and safely without burning the equipment, thereby improving stability and extending the service life of the meter. Service: If you have any questions about this product, please feel free to contact us; we will reply you within 24 hours!