Devices
There are two aspects of devices:
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TDRR 01W
Wall-mount receiver 1-channel
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TDRRT-01W
Wall-mount receiver 1-channel with programmable clock
has two LEDs - one on the ESP-12E submodule, one near the micro USB connector
has only one LED on the ESP-12E submodule
The CC1101 chip can send+receive digital data in a frequency range from ~300-900MHz, but the antenna and external components vary.
Jarolift components operate at 433MHz, so make sure you buy a CC1101 transceiver board dedicated to this frequency, otherwise the range may be short (down to zero...)
This board is bought on ebay, article number 272455130589 (current of 2018-05-19) works for me:
