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PTM 210 / PTM 215 / PTM 215U / PTM 215J User Manual May 2020 | Page 6/37
USER MANUAL
PTM 210 / PTM 215 / PTM 215U / PTM 215J
DC Step code and later
1.2
Basic Functionality
PTM 21x devices contain an electro-dynamic energy transducer which is actuated by the bow.
Drawing with highlighted energy bow
This bow is pushed by an appropriate push button, switch rocker or a similar construction
mounted onto the device. An internal spring will release the energy bow as soon as it is not
pushed down anymore.
When the energy bow is pushed down, electrical energy is created and a radio telegram is
transmitted. Releasing the energy bow similarly generates energy which is used to transmit
an another radio telegram.
Energy bow released
Energy bow pressed
It is therefore possible to distinguish between radio telegrams sent when the energy bow was
pushed and radio telegrams sent when the energy bar was released. By identifying these
different telegrams types and measuring the time between pushing and releasing at the re-
ceiver, it is possible to distinguish between “Long” and “Short” push button presses. This
