USER MANUAL
PTM 215B – BLUETOOTH
®
PUSHBUTTON TRANSMITTER MODULE
© 2019 EnOcean | www.enocean.com
F-710-017, V1.0
PTM 215B User Manual | v1.9 | June 2019 | Page 8/85
2.
Functional information
Device Overview
The pushbutton transmitter module PTM 215B from EnOcean enables the implementation of
wireless remote controls without batteries. It transmits Bluetooth Low Energy (BLE) data
telegrams where the required energy is provided by a built-in electro-dynamic energy gen-
erator.
The outer appearance of PTM 215B is shown on the picture below.
Figure 2 – Electro-dynamic powered pushbutton transmitter module PTM 215B
Basic Functionality
PTM 215B devices contain an electro-dynamic energy converter which is actuated by an
energy bow (1). This bow is pushed by an appropriate push button, switch rocker or a simi-
lar 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 BLE radio tele-
gram is transmitted which identifies the action (pressed or not pressed) and the status of
the four button contacts (2). Releasing the energy bow similarly generates energy which is
used to transmit a different radio telegram.
It is therefore possible to distinguish between radio telegrams sent when the energy bar
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 of the energy bar, it is possible to distinguish between “Long” and “Short”
button contact presses. This enables simple implementation of applications such as dim-
ming control or blinds control including slat action.
(2) Button contacts
for switch rocker
identification
(1) Energy bow
on both device sides
Snap-in and
rotation axis for
pushbuttons or
switch rocker
