The CRM-2H/UNI is an asymmetric flasher relay designed for cyclic switching control with independent adjustable ON and OFF time periods. It features two time functions selectable via external jumper: asymmetric flasher with ON first or OFF first operation, with a time scale ranging from 0.1 seconds to 100 days divided into 10 time ranges, adjustable via rotary switch and potentiometer. The device operates on AC/DC 12–240 V (AC 50–60 Hz) with a maximum power input of 2 VA/1.5 W, includes one changeover contact rated for 16 A AC1 with 4000 VA breaking capacity, and features a multifunction red LED indicator for operational status. It is commonly used for room ventilation control, cyclic dehumidification, light control, circulating pumps, and illuminated advertising applications, offering reliable timing accuracy of ±5% with excellent repeat stability of 0.2%.