Temp & Humidity Wireless Alert System

Temp & Humidity Wireless Alert System

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Item Details

All Features:

  • Monitor (CH1) ambient air temperature and humidity
  • Probe temperature (CH2)
    when optional probe is attached (Dry, wet, and
    wet-threaded probe are
    sold separately)
  • Weather resistant case
  • Wall hanging
    or free standing
  • Add up to 5 sensors
    per gateway to monitor addional areas
  • 200 Ft wireless range
Use your smartphone, tablet or computer to remotely monitor ambient temperature and humidity levels that effect your home, sensitive plants, animals and valuables.

Recieve text and e-mail alerts when your custom min/max temperature or humidity range is exceeded, connection is lost, or battery is low.*


  • Backyard temperature
    and humidity
  • Food storage
  • Plants and gardens
  • Greenhouses
  • Outdoor pets, farms
    and livestock
  • Books and photos
  • Basements, garages
    and attics
  • Computers, servers
    and electronics
  • Offices or rentals
  • Wine storage and humidors
  • Musical instruments
  • Utility room
  • Fireplace mantel


  • Humidity range:
    3% to 99% (%RH)
  • Temperature range:
    -40F to 140F
  • 2 "AAA" Alkaline batteries (not included)
  • Internet gateway, LAN cable and AC adapter included
  • High-speed Internet and router required
How it works:

Connect the gateway to your existing router with the included LAN cable. The Gateway uploads data to www.lacrossealerts.com for 24/7 remote monitoring using a smartphone, tablet or computer.*

The temperature and humidity sensor transmits data to the gateway (200 Ft. range). Alerts are sent as e-mail or text message*


(1) La Crosse Alerts devices will generally recover from most anomalies within 24 hours. If your device does not recover on it's own, unplug the gateway for 10 seconds and then plug it back in.

(2) Is the sensor within ideal reception range from the gateway (200 Ft or less)?

(3) Are the batteries working? Use name-brand alkaline batteries dated at least 7 years in advance. Test the battery voltage to ensure it is at least 1.48 on a voltmeter that reads in numbers.

Item Specifications
Item Number: 138803
Universal Product Code: 757456986852
Manufacturer: La Crosse Technology

Additional Documents
pdf file Manual

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Temp & Humidity Wireless Alert System

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