... for time control, when the timer starts after the start of the countdown, while the output relay action; when the countdown reaches ... 0, stop the countdown, the relay stops working, and starting buzzer 1,working voltage 220V/AC ± ... 10% 50HZ/60HZ2,output load: Relay contact capacity for 5A / 220V / AC3,power consumption: ≤3W4,working ...