IQ Temp-S - QS5535-840

An encrypted dual temperature sensor for real-time temperature alerts

Combining dual encrypted sensors in one smart unit, the IQ Temp-S instantly alerts panels when temperatures exceed 100°F (37.8°C) or drop below 40°F (4.4°C), giving critical early warnings before nuisances become disasters.

The IQ Temp-S is an encrypted dual temperature sensor that alerts your IQ Panel when conditions become extreme.
It signals if temperatures fall below 40°F (4.4°C) or rise above 100°F (37.8°C), using secure S-Line communication and long-lasting lithium power.
The IQ Temp-S is perfect for protecting pipes, HVAC systems and other sensitive areas from freezing or overheating before damage occurs.

IQ Temp-S - QS5535-840

Smart monitoring that’s always in sync

Stay informed and protected with the IQ Temp-S, the wireless, battery‑powered device that keeps constant watch over the conditions in your home. Checking ambient temperature every five minutes, it alerts you instantly when levels rise above ~100°F (≈38°C) or drop below ~40°F (≈4°C), depending on your preferred thresholds. Ideal for detecting HVAC issues early and safeguarding pets, elderly loved ones and valuables, it works seamlessly with any compatible 319.5 MHz control panel for reliable, always‑on monitoring wherever you need it.

Features

Two encrypted temperature sensors combined into a single unit to detect temperature issues
High temp sensor that alerts the panel if the temperature exceeds 100°F (37.8°C)
Text notification sent to your phone if the IQ Temp-S detects a potential problem

Freeze detection that alerts the panel if the temperature drops below 40°F (4.4°C)
Excellent for detecting HVAC failure

Benefits

Monitor temperature to prevent damage

The IQ Temp-S continuously tracks temperature changes, providing timely alerts that help prevent damage to property, equipment and sensitive environments.