NEW V1.1 Configuration:
1) Sensor without battery mounted;
2) MM V1.1 now with battery mounted; (Consummable item: please replace when battery capacity degraded.)
3) Controller unchanged.
NOTICE: LIR1220H battery capacity degrades over time, please BUY new MM V1.1 (with battery), and (optionally) REMOVE existing battery on Sensor (by cutting off battery leads.)