190027 Electronic time-lag relay

Electronic time-lag relay This circuit implements seven different switching functions (power-on delay and power-off delay, timer, monoflop switch with reset, on/off switch, key switch). Time delay is adjustable in 32 stages from 0.1 seconds to 63 hours. Functions and time ranges are selected using rotary switches or dip switches. Two LEDs indicate the presence of the operating voltage and the switching status. Interference-free inputs via optocoupler. Connections for 2 external buttons/switches