System Sensor 5603 135°F Fixed Temp, Single-Circuit Mechanical Heat Detector
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System Sensor 5603 135°F Fixed Temp, Single-Circuit Mechanical Heat Detector

4.2/5
Product ID: 18068843
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Details

  • Brand
    System Sensor
  • Style
    Mechanical
  • Power Source
    Corded
  • Item Weight
    4 ounces
  • Alarm
    Audible
  • Operating Humidity
    95 percent
💧Operates up to 95% humidity
🔥135°F fixed temp precision
⚙️Mechanical single-circuit design

Description

🔥 Stay ahead of the heat—because safety waits for no one!

  • HUMIDITY RESILIENCE - Operates flawlessly in environments with up to 95% humidity, perfect for diverse professional settings.
  • COMPACT LIGHTWEIGHT - At just 4 ounces and 5x5x2.5 inches, it integrates seamlessly without disrupting your space.
  • CORDED ELECTRIC POWER - No batteries needed—continuous, maintenance-free operation for peace of mind.
  • PRECISION HEAT DETECTION - Fixed 135°F threshold ensures reliable, timely alerts before danger escalates.
  • ROBUST MECHANICAL RELIABILITY - Single-circuit mechanical design guarantees consistent performance without electronic failure risks.

The System Sensor 5603 is a compact, mechanical heat detector with a fixed 135°F activation point, designed for dependable single-circuit operation. It excels in high-humidity environments up to 95%, powered by a corded electric source requiring no batteries, making it a low-maintenance, professional-grade safety solution.

Specifications

BrandSystem Sensor
StyleMechanical
Power SourceCorded Electric
Item Weight4 ounces
AlarmAudible
Operating Humidity95 percent
Upper Temperature Rating57.2 Degrees Celsius
ManufacturerSystem Sensor
UPC783863022463
Part Number5603
Product Dimensions5 x 5 x 2.5 inches
Item model number5603
Is Discontinued By ManufacturerNo
Item Package Quantity1
Batteries Included?No
Batteries Required?No

Reviews

4.2

All from verified purchases

J**O

Installed easily in a 2-wire system for a commercial system.

Installed easily in a 2-wire system for a commercial system. Please know that this item is NOT testable and is NOT battery operated. If it alerts, you will have to replace it.

F**Y

Sensor

I guess it works only way to test is have a fire, hope it's never tested.

C**Z

sensor is most likely fine. My rating is not for the sensor

sensor is most likely fine. My rating is not for the sensor. just didn't realize it was a wired variety and therefore useless to me.

J**F

Perfect.

Replacement for a failed unit. Perfect.

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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€ 46.63

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Irelandstore
1
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30 daysfor PRO membership users

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

System Sensor 5603 135 F Fixed Temp Single Circuit Mechanical | Desertcart Ireland