QOLSYS QS5519-840 Wireless Heat Sensor Transmitter Interlogix QS5518-840 IQ4 I2

( Brand: Qolsys ), ( Type: Wireless ), ( Color: White ), ( Manufacturer Part Number: QS5519-840 )

Review QOLSYS Wireless Heat Sensor Transmitter Interlogix Iq4 I2 Plus Nib

Introducing the Qolsys QS5519-840 and QS5518-840 Wireless Heat Sensors, designed specifically for integration with the Interlogix IQ4 and I2 panels. These advanced sensors offer reliable and accurate temperature monitoring for your home or business security system.

The QS5519-840 and QS5518-840 are wireless sensors, providing the flexibility to install them in various locations without the need for hardwiring. They operate on a 433 MHz frequency, ensuring seamless communication with your security panel. Each sensor includes a battery, eliminating the requirement for an external power source.

These heat sensors have a sophisticated temperature sensing technology that can detect temperatures as low as 32 F (-0.1 C) and as high as 158 F (70 C). This wide temperature range allows them to monitor environments such as freezers, garages, and sunrooms. The sensors also feature a high/low temperature alert, which can be configured to send notifications to your smartphone or email when temperatures fall below or exceed the predefined threshold.

The QS5519-840 and QS5518-840 sensors have a sleek design, measuring approximately 3 inches long by 1 inch wide by 1 inch thick, making them discreet and unobtrusive. They are also tamper-resistant, ensuring the security of your temperature monitoring system.

These wireless heat sensors are easy to install and integrate with your Interlogix IQ4 or I2 panel. Simply follow the instructions provided in the user manual to pair the sensors with your system. Once installed, you can monitor the temperature readings and receive alerts through the Alarm.com platform or the Interlogix app, depending on your panel's capabilities.

In summary, the Qolsys QS5519-840 and QS5518-840 Wireless Heat Sensors are essential accessories for your Interlogix IQ4 or I2 security panel. They offer reliable temperature monitoring, flexible installation, and seamless integration with your security system. With their sophisticated temperature sensing technology, high/low temperature alerts, and sleek design, these sensors provide peace of mind and enhanced security for your property.

The Qolsys QS5519-840 and QS5518-840 wireless heat sensors are compatible with the Interlogix IQ4 and I2 panels. These sensors are essential for monitoring and controlling temperature in specific areas of your home. Here are some pros and cons of buying these heat sensors:

1. Easy installation: The sensors can be installed without the need for professional help or wiring, making the process quick and straightforward.

2. Battery-operated: The sensors operate on a CR2 battery, which is replaceable, ensuring that the sensors continue to function even during power outages.

3. Temperature monitoring: These sensors allow you to monitor temperature in specific areas of your home and set temperature thresholds to receive alerts when the temperature goes beyond a certain range.

4. Compatibility: These sensors are compatible with the Interlogix IQ4 and I2 panels, making them a reliable and convenient option for users of these systems.

5. Small size: The sensors have a compact design, making them easy to place in tight spaces or areas where a larger sensor may not fit.

1. Limited range: The sensors have a limited range of up to 150 feet, which may not be sufficient for larger homes or buildings.

2. Single temperature sensor: The sensors only have one temperature sensor, which may not accurately represent the temperature in larger areas or rooms with uneven temperature distribution.

3. Limited compatibility: These sensors are only compatible with the Interlogix IQ4 and I2 panels, which may not be the preferred choice for all homeowners.

4. Manual battery replacement: While the sensors operate on a replaceable battery, the replacement process requires manual intervention, which may not be convenient for some users.

In conclusion, the Qolsys QS5519-840 and QS5518-840 wireless heat sensors are a reliable and convenient option for users of the Interlogix IQ4 and I2 panels. Their easy installation, battery operation, temperature monitoring, and small size make them an attractive choice. However, their limited range, single temperature sensor, and manual battery replacement may be drawbacks for some users.

Based on the pros and cons, I would recommend these sensors for users who require temperature monitoring in specific areas of their home, have an Interlogix IQ4 or I2 panel, and value the ease of installation and battery operation. However, users with larger homes or buildings or a preference for more advanced temperature monitoring features may want to consider other options.

Details:

Condition: New in box. Comes with batteries. QOLSYS WIRELESS HEAT SENSOR DETECTOR - COMES WITH BATTERY WORKS ON iQ iQ4 iQ2, iQ2 PLUS PANEL 2 CONTROL INTERLOGIX / GE 319.5 MHz PANELS

Manufacturer: Qolsys.

part #: qs5519840 prices

• $74.95-$166.00

specifications mansesecure:

• brand: Qolsys
• type: Wireless
• color: White
• manufacturer part number: QS5519-840

offer mansesecure:

• started: February 20, 2026
• sold: 0
• options: Ship-to-home
• best offers: True
• quantity: 2
• availability: In Stock

payments mansesecure:

• other
• credit card: Mastercard
• wallet: Apple-pay

returns mansesecure:

• method: Money back
• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

seller mansesecure:

• # reviews: 18318
• rating: 99.0%
• city: Friendswood, Texas

shipping mansesecure:

• class: Standard, Expedited
• type: Fixed
• cost: $0.00
• transit: 5-11 Days
• service: Standard, Expedited

general mansesecure:

• Home Improvement > Home Security > Other Home Security
• condition: New

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