Doorbell with Coloured Flashing Lights strap Monitor system performance

Monitor system performance

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Doorbell with Coloured Flashing Lights strap Monitor system performanceNever Miss Someone At the Door! Doorbell Ringer Flasher For Deaf and Hard of Hearing people Has switches for ring flash or ring only or flashing only notification Doorbell button lights up to let you know its sending the signal to the flashing unit so your visitors don't have to figure out if its working or not. Works great in noisy places eg factories, warehouses etc Flashing unit assists notification in a quiet environment Small & portable so you