Monnit wireless AC Current Meters measure the RMS current of an alternating current (AC) system using a current transformer (CT) that wraps around the "hot" wire of a two wire (hot, common, ground(optional)) power system. The sensor reports Minimum RMS current, maximum RMS current, average RMS current, and amp hours to the iMonnit system. The iMonnit system is capable of generating watt hour or kilowatt hour readings as well.
WARNING: This AC current meter is for monitoring AC voltage only. Do Not Use with DC voltage.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
AC Current Meter Specifications
|Absolute Max CT Current||50 Amps RMS (Arms)|
|Maximum Accurate CT Current||20 A rms|
|Frequency Measurement Range||50 – 100 Hz|
|Offset Limits||-1.27 to + 1.27 Arms (default set to +.1 Arms)|
|Measurement Resolution||~.01 Arms|
|Lead Wire Length||3 feet|
|Accuracy||+/- (2% +.07 A rms) **|
|Calibrated Accuracy with Appropriate Offset||+/- (1% + .035 A rms)|
|Security||Encrypt-RF® (256-bit key exchange and AES-128 CTR)|
|Weight||4.9 oz. (139 g.) - with CT|
ALTA AA Specifications
|Battery Type||2 Replaceable AA 1.5 V Batteries|
|Dimension||4.375 in x 2.470 in x 1.12 in|
|Supply Voltage||2.0 - 3.8 V (2 x AA 1.5V Batteries or Optional Power Supply)|
|Battery Life||At 1 hour heartbeat setting, AA batteries will last up to 10 years.**|
|Max Operating Temperature Using AA Alkaline||-18°C to 55°C (0°F to 130°F)|
|Max Operating Temperature Using AA Lithium||-40°C to 60°C (-40°F to 140°F)|
|Optimal Battery Operating Temperature||+10°C to +50°C (+50°F to +122°F)|
ALTA 900 MHz Specifications
|Operating Frequency||900 MHz Operating Frequency|
|Certifications||Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-G2SC1)
Complies with Industry Canada standards. (IC: 9794A-G2SC1)
|Device Range||Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*|
|Security||Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)|