Contact King alert and monitoring system with a contact sensor with ambient temperature and humidity to be informed if a drawer door gate is opened or closed works with a Bridge gateway and the La Crosse View app
Contact King alert and monitoring system showing a worried looking dog highlighting a contact sensor that features ambient temperature and humidity, the system informs you if a drawer door gate is opened or closed works with a Bridge gateway and the La Crosse View app
La Crosse Technology Alert and Monitoring system with a male receiving a message on their smartphone of an alert that their open close contact sensor detected a gate had opened with text that says stay in the know with Custom Alerts
Alert and monitoring system open close sensor readings on a smart phone showing the status of OPEN and the temperature and humidity readings with a graph of data points from the sensor readings next to an image of an open gate and the inside of a house with windows looking outside with a dog looking in indicating he escaped the house
Angled front view and view showing the battery compartment of a white and gray La Crosse Technology alert and monitoring system open close contact sensor showing an LCD screen reading OPEN and the ambient temperature at 72 degrees Fahrenheit, feature call out text, three close ups of the LCD screen readings, and the cable with a white rectangle magnetic contact sensors attached and one white rectangle magnetic contact sensor alone
La Crosse Technology Alert and Monitoring System image with text How it works describing the three components necessary for the system sensors the bridge gateway and the La Crosse View app for custom alerts and data
Build your own alert and monitoring system image showing Temp and humidity sensors water leak sensors lifestyle sensors such as pool temperature sensor bbq meat thermometer and an open close sensor and weather sensors including wind and rain with the headline Your System, Your Way with sensor descriptions
Drawing of an alert and monitoring system open closed contact sensor with ambient temperature and humidity showing a front and side view of the sensor and an arial view of the contact cable with dimensions in inches and centimeters
Contact King alert and monitoring system with a contact sensor with ambient temperature and humidity to be informed if a drawer door gate is opened or closed works with a Bridge gateway and the La Crosse View app
Contact King alert and monitoring system showing a worried looking dog highlighting a contact sensor that features ambient temperature and humidity, the system informs you if a drawer door gate is opened or closed works with a Bridge gateway and the La Crosse View app
La Crosse Technology Alert and Monitoring system with a male receiving a message on their smartphone of an alert that their open close contact sensor detected a gate had opened with text that says stay in the know with Custom Alerts
Alert and monitoring system open close sensor readings on a smart phone showing the status of OPEN and the temperature and humidity readings with a graph of data points from the sensor readings next to an image of an open gate and the inside of a house with windows looking outside with a dog looking in indicating he escaped the house
Angled front view and view showing the battery compartment of a white and gray La Crosse Technology alert and monitoring system open close contact sensor showing an LCD screen reading OPEN and the ambient temperature at 72 degrees Fahrenheit, feature call out text, three close ups of the LCD screen readings, and the cable with a white rectangle magnetic contact sensors attached and one white rectangle magnetic contact sensor alone
La Crosse Technology Alert and Monitoring System image with text How it works describing the three components necessary for the system sensors the bridge gateway and the La Crosse View app for custom alerts and data
Build your own alert and monitoring system image showing Temp and humidity sensors water leak sensors lifestyle sensors such as pool temperature sensor bbq meat thermometer and an open close sensor and weather sensors including wind and rain with the headline Your System, Your Way with sensor descriptions
Drawing of an alert and monitoring system open closed contact sensor with ambient temperature and humidity showing a front and side view of the sensor and an arial view of the contact cable with dimensions in inches and centimeters

Contact King Wi-Fi Alert System

SKU: X100-CP-01

$79.99
/
Shipping calculated at checkout.

Every home has a blind spot—the gate your two-or-four-legged Houdini tests when you're at work, the sliding glass door that guests never latch properly, or the attic hatch that pops open on windy days. The Contact King Alert System targets that single access point with precision monitoring that transforms uncertainty into instant awareness. The 40-inch cable that provides flexible placement— whether monitoring your mailbox from inside, tracking a crawlspace entry, or knowing when the outdoor storage box gets opened. It's the one spot where you need to know even if you don't see Spot run. Combined with the Temperature and Humidity Sensor, you're not just monitoring access—you're maintaining environmental awareness too. Start with one critical location now, expand your system whenever you're ready. 

Already own this product? Register it here

Features

ALERT & MONITORING SYSTEM

  • Bridge Gateway (Required & Included)  
  • Sensor (Included):
    • Wired Contact Sensor (LTV-THP1-C1)
  • La Crosse View App (Required Download)
    • Remotely Monitor Sensor Data Anywhere on the Go  
    • Set Free Custom Push Notification Alerts  
    • Track Multiple Devices  
    • Easily Share Devices with Family and Friends  
    • Track Device History with Detailed Graphs & Data Exports  

 

BRIDGE GATEWAY FEATURES (X100)

  • Color Display  
  • Adjustable LCD Brightness (5 Levels)
  • Easy To Read LCD Display with Status Indicators  
    • Wi-Fi Signal  
    • Internet Connection  
    • Data Reception
  • Long Power Cord (71-Inches)
  • Freestanding Base with Built-In Hanging Hole
  • Premium Case – Designed for Durability and Long-Term Use  

  • Support QR Code Conveniently Printed on the Back

     

WIRED CONTACT SENSOR FEATURES (LTV-THP1-C1)

  • Contact Sensor – Open/Closed Detection  
    • 40-inch Cable  
  • Ambient Temperature (°F or °C)
  • Ambient Humidity (%RH)
  • Custom Remote Alerts & Monitoring*
  • Integrated LCD
    • Toggles Between Temperature & Humidity
    • OPEN/CLSD Readings
    • Cable Connection, Transmission, and Low Battery Icons
  • 400-ft (122 m) Wireless Transmission Range
  • Weather Resistant
  • Over 2-year Battery Life  
  • Expertly Designed
  • Integrated Hanging Hole
    • Secure from Front
    • Hang from Back
  • Cable Guides Allow for Flexible Configuration (Left, Center, or Right)  
  • Easy Access Battery Compartment

 

ENDLESS POSSIBILITIES  

Expand your system with additional sensors. Whether it's your first home, dream home, or your home away from home—you deserve an extra layer of comfort and invaluable reassurance. Build a system with the custom alerts you need for the spaces you love, giving you a better sense of home. From up, down, and all around your home, we have you covered with these add-on sensors:

  • Interior Temperature & Humidity – Monitor indoor spaces with an attractive display you don’t have to hide  
  • Temperature & Humidity - Monitor your backyard, nursery, garage, attic, basement, humidor, and more  
  • Temperature Probe - Ideal for refrigerators, freezers, aquariums, terrariums, greenhouses, and more  
  • Spot Water Leak - Put near the washing machine, sink, or water heater to know right when leaks happen  
  • Area Water Leak - For those basement floors, water heaters, and occasionally leaky pipes, this helps you stay informed
  • Open & Closed - Stay informed when those cabinet doors, drawers, sheds, or gates are accessed
  • Pools - Floating sensor provides water temp at the source, in the app, and on your in-home display
  • BBQs - Useful during long roasts or smoking meats to ensure they are at just the right temperature  
  • Rain - Display 24-hour rainfall from a secondary location and view full history in the app
  • Wind - View current wind speed and direction from a second location on your property

Want to learn more about our Alert and Monitoring Systems? Click HERE

 

ADDITIONAL BENEFITS  

  • Mobile-Friendly Setup Guide  
  • Access to Instructional Videos  
  • Lifetime Access to U.S. Based Tech Support  
  • Military & First Responder Discount    
  • La Crosse Technology 1-Year Warranty  
  • 30-Day Money Back Guarantee on LaCrosseTechnology.com Purchases

Designed in La Crosse, WI  

Specs

BRIDGE GATEWAY SPECS (X100)  

  • Wi-Fi Network Requirements*  
    • Broadcast Frequency: 2.4GHz (802.11 b/g/n)  
    • Network Speed: Must Be Greater than 1 Mbps  
    • Name/Password: Must Not Exceed 45 Characters  
  • Mobile Phone Requirements  
    • Apple: iOS with Cellular or Wi-Fi Service  
    • Android: OS with Cellular or Wi-Fi Service  
  • Operating Temperature: 14°F to 132°F (-10°C to 55.5°C)  
  • LCD Brightness: 4 Intensity Levels + OFF
  • Power Requirement: 5V USB-A to AC Power Cord with Brick (Included)  
  • Power Cord Length: 70.87-In (180 cm)  
  • Dimensions: 2.48-in L x 1.79-in W x 5.35-in H 
    (6.29 cm L x 4.53 cm W x 13.58 cm H)  

*Note: If you have a multi-band router, this device will connect to the 2.4GHz band when connecting to Wi-Fi.

WIRED CONTACT SENSOR SPECS (LTV-THP1-C1)

  • Temperature Range: -40°F to 140°F (-40°C to 60°C)
  • Humidity Range: 10% to 99% RH  
  • Transmission Range: 400 Feet (122 Meters) in Open Air
  • Transmission Frequency: 915MHz  
  • Update Interval: ~Every 51 Seconds  
  • Power Requirements: 2 “AA” Alkaline Batteries (Not Included)  
  • Battery Life: 24+ Months
  • Cable Dimensions: 40.64-in L x 0.60-in W x 2.09-in H 
    (103.22 cm L x 1.52 cm W x 5.31 cm H)
  • Sensor Dimensions: 2.16-in L x 0.87-in W x 5.47-in H   
    (5.50 cm L x 2.20 cm W x 13.90 cm H) 
Contact King Wi-Fi Alert System

Parts/Sensors

Register/Warranty

La Crosse Technology, Ltd. provides, to the original purchaser, a 1-year limited time warranty on this product, relating to manufacturing defects in materials & workmanship.  In accordance with the Song-Beverly Act, in the state of California, the warranty on this item becomes effective on the date of delivery.  The item will be either repaired or replaced at La Crosse Technology's discretion.

Click Here for full warranty details

Use the registration form below to register ownership of your product only.  If you have a question about use of the unit, please click on the support tab next to this one to see available support material or submit a ticket.

Support

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