ALTA Wireless Ultrasonic Sensor (AA)


Monnit's ALTA ultrasonic sensors can be used in a variety of applications for measuring distances between the sensor and objects in its path. ALTA ultrasonic sensors are impervious to target surface and color, and feature auto-calibration algorithms which allow them to adapt to variable environmental conditions and compensate for temperature and humidity effects. The ultrasonic sensors can also be calibrated through the iMonnit software for greater accuracy in distance measurements.

Typical applications include: liquid level detection, measurement between sensor and objects, and much more. ALTA commercial ultrasonic sensors are ready-to-use, easy to maintain, and designed to provide you highly reliable and fast measurements for both indoor and outdoor applications.

ALTA Wireless Ultrasonic Sensor (AA) - ALTA WIRELESS ULTRASONIC SENSORS, 900 MHz - AA BATTERY POWERED
Part No. Description Price Stock
MNS2-4-W2-US-ST ALTA WIRELESS ULTRASONIC SENSORS, 433 MHz - AA BATTERY POWERED $245
MNS2-4-W2-US-ST-LP ALTA WIRELESS ULTRASONIC SENSORS, 433 MHz - Line Power w/Batt Backup & Switch $277
MNS2-4-W2-US-ST-SW ALTA WIRELESS ULTRASONIC SENSORS, 433 MHz - Standard AA w/Power Switch $241
MNS2-8-W2-US-ST ALTA WIRELESS ULTRASONIC SENSORS, 868 MHz - AA BATTERY POWERED $235
MNS2-8-W2-US-ST-LP ALTA WIRELESS ULTRASONIC SENSORS, 868 MHz - Line Power w/Batt Backup & Switch $266
MNS2-8-W2-US-ST-SW ALTA WIRELESS ULTRASONIC SENSORS, 868 MHz - Standard AA w/Power Switch $230
MNS2-9-W2-US-ST ALTA WIRELESS ULTRASONIC SENSORS, 900 MHz - AA BATTERY POWERED $235
MNS2-9-W2-US-ST-LP ALTA WIRELESS ULTRASONIC SENSORS, 900 MHz - Line Power w/Batt Backup & Switch $246
MNS2-9-W2-US-ST-SW ALTA WIRELESS ULTRASONIC SENSORS, 900 MHz - Standard AA w/Power Switch $210
MNS2-91-W2-US-ST ALTA WIRELESS ULTRASONIC SENSORS, 920 MHz Korea - AA BATTERY POWERED $220
MNS2-91-W2-US-ST-LP ALTA WIRELESS ULTRASONIC SENSORS, 920 MHz Korea - Line Power w/Batt Backup & Switch $266
MNS2-91-W2-US-ST-SW ALTA WIRELESS ULTRASONIC SENSORS, 920 MHz Korea - Standard AA w/Power Switch $230
∗ 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.

  • Wireless Sensor
  • Mounting Hardware
  • 2 x AA Batteries
  • Features


    • 900/868/433 MHz Operating Frequency
    • Resolution: 1 CM
    • Minimum Distance: 10 centimeters
    • Maximum Distance: 400 centimeters
    • Accuracy: 5% FS (can be calibrated for further accuracy)
    • Weight: 3.7 oz.
    • 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
    • Security: Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)

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