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Signal generator Grothe SG 851 — electronic chime/doorbell module, 8–12 V AC input
Summary description:
Grothe SG 851 is an electronic signal generator designed for door chimes and signaling systems. It accepts an 8–12 V AC input and provides electronic tone generation for use with compatible chime speakers or doorbell installations. Suited for residential and light commercial applications, it enables reliable audible signals, simple integration into existing wiring, and compact mounting.