Smart Shield Systems
IQ Temp-S
Protect pipes, pets, and specialty rooms with a compact sensor that alerts you when indoor temperatures swing too low or too high. The IQ Temp-S pairs with IQ Panels to help you act before small issues become costly problems.

Why Choose This with Smart Shield Systems
- Pro monitoring & alerts when temps cross safe limits
- Fast, clean install and guidance on ideal placement
- Built for IQ Panels with encrypted communication on compatible models
- Local experts from Smart Shield Systems for design, install, and support
Key Features
- High/Low temperature protection: Triggers below 40°F (restores at 45°F) and above 100°F (restores at 95°F).
- Encrypted S-Line technology on compatible IQ Panels for enhanced security.
- Frequent checks: Temperature sampled every 5 minutes; battery status checked hourly.
- Discreet design with included adhesive for quick, flexible placement.
- Mobile notifications through your monitored IQ system.
Product Specifications (At-a-Glance)
- Model / Part #: IQ Temp-S / QS5535-840
- Wireless: 319.5 MHz S-Line; nominal open-air range up to 600 ft
- Supervision: Sends supervisory signal about every 70 minutes
- Power: Two CR2032 lithium coin cells
- Operating environment: 14°F–122°F, indoor use only
- Size: 2.5" L × 1.0" W × 0.5" D
Compatibility Notes
- Works with IQ Panels using 319.5 MHz; S-Line encryption is used on compatible IQ panels (unencrypted on other 319.5 MHz systems).
- On IQ Panels, enroll using Sensor Group 52 (Freeze); many setups use two zones (one “Low Temp,” one “High Temp”).
Popular Use Cases
- Basements, crawlspaces, and laundry rooms (burst-pipe prevention)
- Bathrooms and utility rooms with vulnerable plumbing
- Equipment closets, pantries, wine storage, or pet areas needing high-temp alerts
Frequently Asked Questions
Place it where temperature problems would start (near plumbing runs, exterior walls, or low-airflow corners), but avoid obvious heat sources (furnaces, water heaters, or direct sunlight). We’ll help you pinpoint the best spot during installation.
It samples temperature every 5 minutes, and also performs hourly battery checks. Supervisory signals are sent roughly every 70 minutes.
Yes. When connected to your monitored IQ system, you can receive mobile notifications and take action quickly.
Yes. The sensor is battery powered. Your IQ Panel’s backup battery and cellular path keep alerts flowing when the power is out.
Absolutely. We typically enroll two zones—one for low-temp (freeze) alerts and one for high-temp alerts—so you can manage each independently.
Additional Resources
Download ManualReady to Add Temp Protection?
Smart Shield Systems can design coverage for your vulnerable areas, install the IQ Temp-S cleanly, and set up alerts so you’re never caught off guard.