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ALTA Wireless Humidity Sensor (AA)


Monnit's ALTA wireless humidity sensors allow you to monitor the relative humidity of the air within a room or enclosure. Ideal for monitoring humidity within greenhouses, industrial spaces, museums, saunas and humidors. They can also be used for residential applications such as controlling mold, mildew or dust mites.

ALTA Wireless Humidity Sensor (AA) - ALTA WIRELESS HUMIDITY SENSOR, 900 MHz - AA BATTERY POWERED
Part No. Description Price Stock
MNS2-4-W2-HU-RH ALTA WIRELESS HUMIDITY SENSOR, 433 MHz - AA BATTERY POWERED $99
MNS2-8-W2-HU-RH ALTA WIRELESS HUMIDITY SENSOR, 868 MHz - AA BATTERY POWERED $99
MNS2-9-W2-HU-RH ALTA WIRELESS HUMIDITY SENSOR, 900 MHz - AA BATTERY POWERED $99
MNS2-91-W2-HU-RH ALTA WIRELESS HUMIDITY SENSOR, 920 MHz Korea - AA BATTERY POWERED $99
MNS2-4-W2-HU-RH-SW ALTA WIRELESS HUMIDITY SENSOR, 433 MHz - Standard AA w/Power Switch $109
MNS2-8-W2-HU-RH-SW ALTA WIRELESS HUMIDITY SENSOR, 868 MHz - Standard AA w/Power Switch $109
MNS2-9-W2-HU-RH-SW ALTA WIRELESS HUMIDITY SENSOR, 900 MHz - Standard AA w/Power Switch $109
MNS2-4-W2-HU-RH-L03 ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 3 foot lead - AA BATTERY POWERED $124
MNS2-8-W2-HU-RH-L03 ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 3 foot lead - AA BATTERY POWERED $124
MNS2-9-W2-HU-RH-L03 ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 3 foot lead - AA BATTERY POWERED $124
MNS2-4-W2-HU-RH-L10 ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 10 foot lead - AA BATTERY POWERED $131
MNS2-8-W2-HU-RH-L10 ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 10 foot lead - AA BATTERY POWERED $131
MNS2-9-W2-HU-RH-L10 ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 10 foot lead - AA BATTERY POWERED $131
MNS2-4-W2-HU-RH-L03-SW ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 3 foot lead - Standard AA w/Power Switch $134
MNS2-8-W2-HU-RH-L03-SW ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 3 foot lead - Standard AA w/Power Switch $134
MNS2-9-W2-HU-RH-L03-SW ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 3 foot lead - Standard AA w/Power Switch $134
MNS2-4-W2-HU-RH-L10-SW ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 10 foot lead - Standard AA w/Power Switch $141
MNS2-8-W2-HU-RH-L10-SW ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 10 foot lead - Standard AA w/Power Switch $141
MNS2-9-W2-HU-RH-L10-SW ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 10 foot lead - Standard AA w/Power Switch $141
MNS2-4-W2-HU-RH-LP ALTA WIRELESS HUMIDITY SENSOR, 433 MHz - Line Power w/Batt Backup & Switch $145
MNS2-8-W2-HU-RH-LP ALTA WIRELESS HUMIDITY SENSOR, 868 MHz - Line Power w/Batt Backup & Switch $145
MNS2-9-W2-HU-RH-LP ALTA WIRELESS HUMIDITY SENSOR, 900 MHz - Line Power w/Batt Backup & Switch $145
MNS2-4-W2-HU-RH-L25 ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 25 foot lead - AA BATTERY POWERED $146
MNS2-8-W2-HU-RH-L25 ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 25 foot lead - AA BATTERY POWERED $146
MNS2-9-W2-HU-RH-L25 ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 25 foot lead - AA BATTERY POWERED $146
MNS2-4-W2-HU-RH-L25-SW ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 25 foot lead - Standard AA w/Power Switch $156
MNS2-8-W2-HU-RH-L25-SW ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 25 foot lead - Standard AA w/Power Switch $156
MNS2-9-W2-HU-RH-L25-SW ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 25 foot lead - Standard AA w/Power Switch $156
MNS2-4-W2-HU-RH-NC ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,NIST Certified - AA BATTERY POWERED $164
MNS2-8-W2-HU-RH-NC ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,NIST Certified - AA BATTERY POWERED $164
MNS2-9-W2-HU-RH-NC ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,NIST Certified - AA BATTERY POWERED $164
MNS2-4-W2-HU-RH-L03-LP ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 3 foot lead - Line Power w/Batt Backup & Switch $170
MNS2-8-W2-HU-RH-L03-LP ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 3 foot lead - Line Power w/Batt Backup & Switch $170
MNS2-9-W2-HU-RH-L03-LP ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 3 foot lead - Line Power w/Batt Backup & Switch $170
MNS2-4-W2-HU-RH-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,NIST Certified - Standard AA w/Power Switch $174
MNS2-8-W2-HU-RH-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,NIST Certified - Standard AA w/Power Switch $174
MNS2-9-W2-HU-RH-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,NIST Certified - Standard AA w/Power Switch $174
MNS2-4-W2-HU-RH-L10-LP ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 10 foot lead - Line Power w/Batt Backup & Switch $177
MNS2-8-W2-HU-RH-L10-LP ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 10 foot lead - Line Power w/Batt Backup & Switch $177
MNS2-9-W2-HU-RH-L10-LP ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 10 foot lead - Line Power w/Batt Backup & Switch $177
MNS2-4-W2-HU-RH-L03-NC ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 3 foot lead,NIST Certified - AA BATTERY POWERED $189
MNS2-8-W2-HU-RH-L03-NC ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 3 foot lead,NIST Certified - AA BATTERY POWERED $189
MNS2-9-W2-HU-RH-L03-NC ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 3 foot lead,NIST Certified - AA BATTERY POWERED $189
MNS2-4-W2-HU-RH-L25-LP ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 25 foot lead - Line Power w/Batt Backup & Switch $192
MNS2-8-W2-HU-RH-L25-LP ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 25 foot lead - Line Power w/Batt Backup & Switch $192
MNS2-9-W2-HU-RH-L25-LP ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 25 foot lead - Line Power w/Batt Backup & Switch $192
MNS2-4-W2-HU-RH-L10-NC ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 10 foot lead,NIST Certified - AA BATTERY POWERED $196
MNS2-8-W2-HU-RH-L10-NC ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 10 foot lead,NIST Certified - AA BATTERY POWERED $196
MNS2-9-W2-HU-RH-L10-NC ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 10 foot lead,NIST Certified - AA BATTERY POWERED $196
MNS2-4-W2-HU-RH-L03-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 3 foot lead,NIST Certified - Standard AA w/Power Switch $199
MNS2-8-W2-HU-RH-L03-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 3 foot lead,NIST Certified - Standard AA w/Power Switch $199
MNS2-9-W2-HU-RH-L03-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 3 foot lead,NIST Certified - Standard AA w/Power Switch $199
MNS2-4-W2-HU-RH-L10-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 10 foot lead,NIST Certified - Standard AA w/Power Switch $206
MNS2-8-W2-HU-RH-L10-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 10 foot lead,NIST Certified - Standard AA w/Power Switch $206
MNS2-9-W2-HU-RH-L10-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 10 foot lead,NIST Certified - Standard AA w/Power Switch $206
MNS2-4-W2-HU-RH-NC-LP ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,NIST Certified - Line Power w/Batt Backup & Switch $210
MNS2-8-W2-HU-RH-NC-LP ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,NIST Certified - Line Power w/Batt Backup & Switch $210
MNS2-9-W2-HU-RH-NC-LP ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,NIST Certified - Line Power w/Batt Backup & Switch $210
MNS2-4-W2-HU-RH-L25-NC ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 25 foot lead,NIST Certified - AA BATTERY POWERED $211
MNS2-8-W2-HU-RH-L25-NC ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 25 foot lead,NIST Certified - AA BATTERY POWERED $211
MNS2-9-W2-HU-RH-L25-NC ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 25 foot lead,NIST Certified - AA BATTERY POWERED $211
MNS2-4-W2-HU-RH-L25-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 433 MHz,with 25 foot lead,NIST Certified - Standard AA w/Power Switch $221
MNS2-8-W2-HU-RH-L25-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 868 MHz,with 25 foot lead,NIST Certified - Standard AA w/Power Switch $221
MNS2-9-W2-HU-RH-L25-NC-SW ALTA WIRELESS HUMIDITY SENSOR, 900 MHz,with 25 foot lead,NIST Certified - Standard AA w/Power Switch $221
MNS2-4-W2-HU-RH-L03-NC-LP ALTA WIRELESS HUMIDITY SENSOR,433 MHz,3 foot lead,NIST Certified - Line Power w/Batt Backup & Switch $235
MNS2-8-W2-HU-RH-L03-NC-LP ALTA WIRELESS HUMIDITY SENSOR,868 MHz,3 foot lead,NIST Certified - Line Power w/Batt Backup & Switch $235
MNS2-9-W2-HU-RH-L03-NC-LP ALTA WIRELESS HUMIDITY SENSOR,900 MHz,3 foot lead,NIST Certified - Line Power w/Batt Backup & Switch $235
MNS2-4-W2-HU-RH-L10-NC-LP ALTA WIRELESS HUMIDITY SENSOR,433MHz,10 foot lead,NIST Certified - Line Power w/Batt Backup & Switch $242
MNS2-8-W2-HU-RH-L10-NC-LP ALTA WIRELESS HUMIDITY SENSOR,868MHz,10 foot lead,NIST Certified - Line Power w/Batt Backup & Switch $242
MNS2-9-W2-HU-RH-L10-NC-LP ALTA WIRELESS HUMIDITY SENSOR,900MHz,10 foot lead,NIST Certified - Line Power w/Batt Backup & Switch $242
MNS2-4-W2-HU-RH-L25-NC-LP ALTA WIRELESS HUMIDITY SENSOR,433MHz,25 foot lead,NIST Certified - Line Power w/Batt Backup & Switch $257
MNS2-8-W2-HU-RH-L25-NC-LP ALTA WIRELESS HUMIDITY SENSOR,868MHz,25 foot lead,NIST Certified - Line Power w/Batt Backup & Switch $257
MNS2-9-W2-HU-RH-L25-NC-LP ALTA WIRELESS HUMIDITY SENSOR,900MHz,25 foot lead,NIST Certified - Line Power w/Batt Backup & Switch $257
∗ 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.

Packing List


  • Wireless Sensor
  • 2 x AA Batteries
  • Mounting Hardware

Features


  • 900/868/433 MHz Operating Frequency
  • Accuracy: +/- 3% under normal conditions ( 10% - 90% RH )
  • RH Operating Range: 0 - 100% RH
  • RH Response Time: 8 sec ( tau 63% )
  • Weight: 3.7 oz.
  • 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)
  • ABS Enclosure
  • Scientific grade senso

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