Voltage relay with digital adjustment

Digital

— adjustment of parameters using control electronic circuits. For such devices, it is mandatory to have a display: during adjustment, it displays a configurable parameter that can be changed by pressing the “+” (“Up”) and “—” (“Down”) buttons. Digital adjustment is somewhat more expensive than mechanical adjustment, but it significantly exceeds it in accuracy — the adjustment step can be 1 – 3 (seconds, volts, etc.).