Byron Wired Doorbells can be powered by batteries only, transformer only or either battery or transformer depending on the model. They all must be connected to a wired bell push button which can be illuminated for transformer operation, but cannot be illuminated for battery operation. A selection of bell push buttons is shown [ Click Here ]. All wired units can be extended with wireless units if a Wired to Wirefree Extender is connected into the wiring from the bell push button. All transformer powered models must operate bettween 8v - 12v ac and be supplied with 1 amp (transformer 7770). If 2 bells are operated on the same system then the total current supplied will need to be 2 amps (transformer 7781). It is important that bell wire or equivilent is used that can handle 1 amp (do not use Cat 5 or telephone cable) - we supply 9m lengths code 7200 on our website.
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