Energy Monitor Shield

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Energy Monitor Shield is an Arduino-compatible expansion card designed for building energy monitoring system with LCD screen and an interface for connecting the wireless transceiver nRF24L01 +.

Energy Monitor Shield V0.9b Energy Monitor Shield V2
Energy Monitor Shield V0.9b, V1.0, V1.0 rev 1

Here lists the comparison among various versions:

Parameter Energy Monitor Shield V09b Energy Monitor Shield V1.0 Energy Monitor Shield V1.0 rev1 Energy Monitor Shield V1.1 rev1 Energy Monitor Shield V2.0
Product Release Date 20.10.2013 01.04.2014 24.10.2014 soon 29.12.2014
Production Status Not produced In production In production In production In production
Тype RF module nRF24L01 + nRF24L01 + nRF24L01 + nRF24L01 + mini nRF24L01 +
Auto LED RF activity NO NO YES YES YES
Support display LCD LCD LCD LCD (brightness control) OLED I2C (not included)
E2prom onboard (for OTA firmware updates) NO NO NO YES NO
Support RS485 NO NO NO NO MAX485
Phase measurement 3 3 3 3 1
IR counter NO NO NO NO YES
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