Vaisala HMP240 User Manual
Page 92
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HMP240
Appendix 1: Serial commands
M210300en
90
?? <cr>
Command ?? outputs the same information as command ? but it works also
when the transmitter has been set to POLL mode. However, if there are more
than one addressed transmitters connected to the serial bus, they all will re-
spond at the same time and the output on the screen will be chaotic.
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