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Electronic bistable impulse relay allows you to switch on lighting or other device from several different points using control buttons connected in parallel.
The receiver is switched on after impulse of current caused by pressing any momentary (bell) button connected to the relay. The receiver will be switched off after the next pulse.
The relay has no "memory". contact position, i.e. in the case of power failure and its return, the relay contact will be switched off. Prevents is the automatic activation of controlled receivers without supervision after a long-term power failure.