USER MANUAL V1.0
© 2016 EnOcean | www.enocean.com
F-710-017, V1.0
PTM 535Z User Manual | v1.0 | March 2016 | Page 12/38
PTM 535Z – 2.4 GHZ PUSHBUTTON TRANSMITTER MODULE
2.7
Radio interface
2.7.1
Antenna
PTM 535Z transmits data based on an on-board PCB antenna (ANT). An external 50Ω whip
antenna connected to the EXT_ANT pin can alternatively be used. Connection to the inter-
nal antenna has to be cut in this case by removing capacitor CA.
Please check with EnOcean if you intend to use an external antenna.
2.7.2
Supported Radio Channels
PTM 535Z supports all sixteen IEEE 802.15.4 radio channels in the 2.4 GHz band (channels
11 … 26 according to IEEE 802.15.4 notation).
Table 4 below shows the correspondence between channel number and channel frequency
(in MHz).
Table 4: IEEE 802.15.4 Radio Channels and Frequencies (in MHz)