Bi - Symmetrical cyclical operation pulse first.
Applying the supply voltage U starts the cyclical operation from switching on the output relay R for the set interval T. After the interval T has lapsed, the output relay R switches off for the interval T. The cyclical operation lasts until the supply voltage U is interrupted.
Relays performing the function "Bi": RPC-.MA-..., RPC-.MB-..., RPC-1MC-UNI, RPC-.MD-UNI, TR4N 1CO, 2CO, TR4N 4CO, T-R4, PIR15...T