The REV-120 (24V) time relay is a microprocessor-based device designed to switch the load on and off at user-defined intervals. The device is mounted on a standard din rail and takes up only one module in the panel.

The device has two output channels with normally open and normally closed contacts. 
Also on the front part of the device are: a regulator for setting the time interval ‘ΔT’, a regulator for setting the time ‘T’, a regulator for setting the operating mode ‘W’. 

REV-120 (24V) has ten operating modes: 

Switch-on delay.
Time delay when power is applied.
Periodic with a delay when switching on.
Periodic with time delay when switching on.
Delayed switch-off (when the control contact is disconnected).
Pulse 1 (when the control contact closes).
Pulse 2 (when the control contact is open).
On-off delay (by control contact).
Load relay step (each time the control contact closes).
Pulse generator 0.5 s.

Before connecting the product, it must be configured.

The time relay is set up in the following order:

first, set the operating mode (move the mode setting knob to the leftmost position, regardless of the position of the knob, and then set the required mode clockwise), then set the time interval with the ‘ΔT’ knob, then set the time with the ‘T’ knob. 
It should be noted that when changing the operating mode or time intervals of the product at the supplied supply voltage, it should be borne in mind that the changes will take effect only after switching off (for at least 1 s) and switching on the product again.