Users Manual

RF1276D27 Long Distance Transceiver module V4.0
- 6 - 2016-6-12
The logic level of SET pin is used to switch between express communicationand breath period
communication in central/node mode. In sleep mode, theSET pin should be connected to logic high or
suspended. If the SET pin is set to high, the node module willkeeps CAD wireless monitor to detect if there
is any wireless signal coming at the interval ofthe breath period. If the SET pin is set to logic low, the node
module will keep in receivemode so the central module will not need to send long preamble. The most
importance is the logic level ofSET for central module must be the same as the node module.
7. Dimension