La Crosse Technology WS 550 US - Manual (Page 41)

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12. Wireless technology BidCoS™
BidCoS (Bidirectional Communication Standard) is a new wireless standard
that has been specially developed for wireless control of sensors and actors
for house automation. It allows you to build an entire house controlling system
with compatible components: switch/dim lights and other electrical appliances,
air-conditioners (heating, cooling, airing, weather measuring technology, energy
management, access control, protection against burglary, safety devices, etc.).
Speedy bi-directional communication (wireless signals that are sent are confirmed
by the receiver) increases the functional safety and thus form the basis for a mul-
titude of options for remote control / remote monitoring.
Bi-directional data transfer of WS 550 US to TX 550 and all additional sensors
works according to BidCoS Standard.