ALTA Wireless AC Current Meter (AA)


ALTA 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.

ALTA Wireless AC Current Meter (AA) - ALTA WIRELESS AC CURRENT METER - 20 AMP, 900 MHz, AA BATTERY POWERED
Part No. Description Price Stock
MNS2-4-W2-CM-020 ALTA WIRELESS AC CURRENT METER - 20 AMP, 433 MHz, AA BATTERY POWERED $165
MNS2-4-W2-CM-020-LP ALTA WIRELESS AC CURRENT METER - 20 AMP, 433 MHz, Line Power w/Batt Backup & Switch $211
MNS2-4-W2-CM-020-SW ALTA WIRELESS AC CURRENT METER - 20 AMP, 433 MHz, Standard AA w/Power Switch $175
MNS2-4-W2-CM-150 ALTA WIRELESS AC CURRENT METER - 150 AMP, 433 MHz, AA BATTERY POWERED $176
MNS2-4-W2-CM-150-LP ALTA WIRELESS AC CURRENT METER - 150 AMP, 433 MHz, Line Power w/Batt Backup & Switch $222
MNS2-4-W2-CM-150-SW ALTA WIRELESS AC CURRENT METER - 150 AMP, 433 MHz, Standard AA w/Power Switch $186
MNS2-4-W2-CM-500 ALTA WIRELESS AC CURRENT METER - 500 AMP, 433 MHz, AA BATTERY POWERED $209
MNS2-8-W2-CM-020 ALTA WIRELESS AC CURRENT METER - 20 AMP, 868 MHz, AA BATTERY POWERED $154
MNS2-8-W2-CM-020-LP ALTA WIRELESS AC CURRENT METER - 20 AMP, 868 MHz, Line Power w/Batt Backup & Switch $200
MNS2-8-W2-CM-020-SW ALTA WIRELESS AC CURRENT METER - 20 AMP, 868 MHz, Standard AA w/Power Switch $164
MNS2-8-W2-CM-150 ALTA WIRELESS AC CURRENT METER - 150 AMP, 868 MHz, AA BATTERY POWERED $165
MNS2-8-W2-CM-150-LP ALTA WIRELESS AC CURRENT METER - 150 AMP, 868 MHz, Line Power w/Batt Backup & Switch $211
MNS2-8-W2-CM-150-SW ALTA WIRELESS AC CURRENT METER - 150 AMP, 868 MHz, Standard AA w/Power Switch $175
MNS2-8-W2-CM-500 ALTA WIRELESS AC CURRENT METER - 500 AMP, 868 MHz, AA BATTERY POWERED $198
MNS2-9-W2-CM-020 ALTA WIRELESS AC CURRENT METER - 20 AMP, 900 MHz, AA BATTERY POWERED $140
MNS2-9-W2-CM-020-LP ALTA WIRELESS AC CURRENT METER - 20 AMP, 900 MHz, Line Power w/Batt Backup & Switch $186
MNS2-9-W2-CM-020-SW ALTA WIRELESS AC CURRENT METER - 20 AMP, 900 MHz, Standard AA w/Power Switch $150
MNS2-9-W2-CM-150 ALTA WIRELESS AC CURRENT METER - 150 AMP, 900 MHz, AA BATTERY POWERED $150
MNS2-9-W2-CM-150-LP ALTA WIRELESS AC CURRENT METER - 150 AMP, 900 MHz, Line Power w/Batt Backup & Switch $196
MNS2-9-W2-CM-150-SW ALTA WIRELESS AC CURRENT METER - 150 AMP, 900 MHz, Standard AA w/Power Switch $160
MNS2-9-W2-CM-500 ALTA WIRELESS AC CURRENT METER - 500 AMP, 900 MHz, AA BATTERY POWERED $180
MNS2-91-W2-CM-150 ALTA WIRELESS AC CURRENT METER - 150 AMP, 920 MHz Korea, AA BATTERY POWERED $165
MNS2-91-W2-CM-500 ALTA WIRELESS AC CURRENT METER - 500 AMP, 920 MHz Korea, AA BATTERY POWERED $198
∗ Standard lead time is 1 week

ALTA - Leading Enterprise Grade "Internet of Things" Solutions

ALTA sensors offer 3 to 4 times the range of standard sensor platforms, extending non-line-of-sight reach to an exceptional 1,200+ feet through walls (12-14 walls typical). Using Frequency-hopping Spread Spectrum (FHSS) also allows ALTA sensors to have better interference immunity from other wireless devices.

Superior power management provides ALTA sensors with almost twice the battery life of Monnit's standard wireless sensors.

  • Coin cell sensors typically last 3+ years.
  • AA and Industrial sensors typically last up to 12+ years.
ALTA products employ Monnit's new Encrypt-RF® Security (256-bit Diffie Hellman key exchange and AES-128 CBC encryption for all sensor data messages), so security is maintained at all communication points from sensor to gateway, gateway to software, then back again.

Integrated on-board data storage allows ALTA sensors to store data messages if communication to a wireless gateway is disrupted (power outage, Internet outage, or out of range). Messages that can't be delivered will be time-stamped and stored in memory (up to the last 512 messages) until communication with the gateway is restored, at which point the messages will all be transmitted.

Over-the-air updates allow ALTA products to be updated remotely if new fixes or features become available.

The standard version of this sensor is powered by two replaceable 1.5 V AA sized batteries (included with purchase). This sensor is also available with a line power option. The line powered version of this sensor has a barrel power connector allowing it to be powered by a standard 3.0 - 3.8 V power supply (Included with Line Power option upgrade). The line powered version also uses two standard 1.5 V AA batteries as backup for uninterrupted operation in the event of line power outage.

Power options must be selected at time of purchase, as the internal hardware of the sensor must be changed to support the selected power requirements.

0-20 Amp Current Meter Specifications


Absolute max CT current50 Amps RMS (A rms)
Maximum accurate CT current20 A rms
Frequency range50-100 Hz
Accuracy+/- 2% @ 2 to 20 A rms, +/- .07 A rms @ < 2 A rms **
Calibrated accuracy with appropriate offset+/- 1% @ 2 to 20 A rms, +/- .035 A rms @ < 2 A rms **
Offset limits-1.27 to + 1.27 A rms (default set to +0.1 A rms) ***
Measurement resolution~.01 A rms
Current transducer dimensions40 mm x 25 mm x 26 mm (10 mm inner diameter)

0-150 Amp Current Meter Specifications


Absolute max CT current200 Amps RMS (A rms)
Maximum accurate CT current150 A rms
Frequency range50-100 Hz
Accuracy+/- 2% @ 2 to 150 A rms, +/- 0.4 A rms @ < 15 A rms **
Calibrated accuracy with appropriate offset+/- 1% @ 2 to 150 A rms, +/- 0.2 A rms @ < 2 A rms **
Offset limits-1.27 to + 1.27 A rms (default set to + 0.3 A rms) ***
Measurement resolution~0.1 A rms
Current transducer dimensions67 mm x 49 mm x 42 mm (24 mm inner diameter)

0-500 Amp Current Meter Specifications


Absolute max CT current600 Amps RMS (A rms)
Maximum accurate CT current500 A rms
Frequency range50-100 Hz
Accuracy+/- (2% + 1.4 A rms) **
Calibrated accuracy with appropriate offset+/- (1% + .7 A rms) **
Measurement resolution~0.3A rms
Typical Deadband~1.45 A rms ***

Packing List


  • Wireless Sensor
  • Mounting Hardware
  • 2 x AA Batteries

Features


  • 900/868/433 MHz Operating Frequency
  • Measures amp hours, max RMS current, min RMS current, and average RMS current.
  • Capable of generating Watt Hour or Kilowatt Hour readings using iMonnit.
  • Data logging for accumulated amp hour readings.
  • Can notify based on current levels or changes in current levels.
  • Measures current from 0 to 500 Amps.
  • Security: Encrypt-RF® (256-bit key exchange and AES-128 CTR)
  • 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, included AA batteries will typically last 6-8 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)
  • Enclosure Material: ABS

* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.