User's Manual

Operation Mode
There are four operating modes of LR-101H.
1. Normal mode 2.Wake-up mode 3.Power-saving mode 4.Setup mode.
The four operation modes are switched by the signal level of P1 and P2.
Mode 1: Normal mode (P1=0, P2=0)
UART is opened. Wireless channel is opened. Penetrating transmission.
Mode 2: Wake-up mode (P1=0, P2=1)
UART is opened. Wireless channel is opened. The only difference from normal mode
is that its preamble is longer than normal mode’s, so that it can make sure the
receiver could be waked in the power-saving mode.
Note: The receiver could be waked no matter it is in normal mode or wake-up mode
or power-saving mode. The receiver would automatically add the RSSI at the end of
the received data.
Mode 3: Power-saving mode (P1=1, P2=0)
UART is closed. The wireless channel is in power-saving mode. You can set up an
interval from 0.5 to 5 seconds to wake up in power-saving mode to check if there is
preamble. If the receiver receives preamble, it will open UART, and wake MCU to
process the received data and return data. After that, it will return to the power-saving
mode.
Mode 4: Setup mode (P1=1, P2=1)
UART is closed. Wireless channel is closed. It could only be configured.