Installation Guide
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SETUP
1. Connect gateway to router.
2. Insert power cord into outlet and into 
 gateway.
3. Wait for 4 red blinks
4. Insert 2 AAA batteries into sensor.
 Observe correct polarity.
5. Download La Crosse Alerts Mobile App.
6. Follow the on screen instructions.
AAA
AAA
GATEWAY LIGHTS
4 BLINKS: Ready to register
3 BLINKS: Cannot find server
2 BLINKS: No IP address
1 BLINK: Check LAN cable
NO LIGHT: Check power cord 
RED/GREEN LIGHTS BLINK: 
Delete existing registration 
SOLID RED: Registered
FACTORY RESET
Gateway: 
1. Remove power cord
2. Hold gray button & insert power cord
3. Continue to hold until red light flashes twice. Release button.
4. When light flashes 4 times, register.
Sensor:
1. Hold gray button on sensor until sensor display resets.
• Do not mix old and new batteries. 
• Do not mix Alkaline, Lithium, standard, or rechargeable batteries. 
• Always purchase the correct size and grade of battery most suitable 
 for intended use; 
• Clean the battery contacts and also those of the device prior to 
 battery installation; 
• Ensure the batteries have with correct polarity (+ / -)
• Remove batteries from equipment that will not to be used for an 
 extended period.
• Promptly remove expired batteries.
CARE AND MAINTENANCE
• Temperature: -40ºF to 140ºF (-40ºC to 50ºC)
• Humidity: 3% RH to 99% RH
• Probe Temperature: -40ºF to 140ºF (-40ºC to 50ºC)
• Transmission: 200 ft. (60.96m) in open air 
• Battery Requirements: Sensor: 2 “AAA” (LR3) battery (not included)
• Dimensions: 1.44” L x 0.76” W x 5.73” H (3.66 L x 1.93 W x 14.55 H cm)
System Requirements: 
• iOS 8 or greater is required with a Safari browser
• Android 4.0.3 or greater is required with Chrome or Stock browser
Browser: 
• Mac supported versions (min) OSX 10.8, 10.9 or 10.10 with Safari 6.1.1+, 
 Chrome 36+ or Firefox 39+
• Windows supported versions (min) 7/SP1, 8.1/Update 1, or 10 (Pro/Home) 
 with Chrome 36+, Firefox 39+ or Internet Explorer 10/11. 
SPECIFICATIONS
Setup Video: www.lacrossetechnology.com/support/lacrossealertsmobile/
 WARNING: This product can expose you to chemicals including 
styrene, which is known in the State of California to cause cancer. 
For more information go to: www.P65Warnings.ca.gov


