Datasheet

reception is only possible once all other electrical products using
the 433 MHz are switched off.
5. Within thick concrete rooms such as basements and tower blocks,
the 433 MHz signal can be weakened (avoid placing near metal
frames and structures).
6. Transmission can be affected by exposure to extreme temperature
conditions. For example, if the weather has been extremely cold
(under -25ºC) for an extended period of time then the transmission
signal may be weakened. (Please bears this in mind when
positioning the transmitter).
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