摘要 |
A wireless sensor module comprises: input means (2) for determining a target piece of information such as temperature. A transmitter (18) is arranged to transmit this information to a remote receiver (48) in discrete bursts. The module's power supply (4) comprises one or more photovoltaic cells (22) at least one capacitor (34) arranged to be charged by the photovoltaic cell(s) (22). The capacitor is further arranged such that it may power the transmitter (18).
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