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Main Page > Fire Alarm Systems > Apollo Orbis Intrinsically Safe (IS) Range of Conventional Detectors > APOLLO Orbis ORB-HT-51146-APO I.S. A1R Heat Detector with Flashing LED
APOLLO Orbis ORB-HT-51146-APO I.S. A1R Heat Detector with Flashing LED  

The Orbis IS Heat Detector monitors temperature by using a single thermistor network which provides a voltage output proportional to the external air temperature. The Orbis IS range incorporates seven heat detector classes to suit a wide range of operating conditions.

APOLLO Orbis ORB-HT-51146-APO I.S. A1R Heat Detector is used where not sudden increase possible in heat likely in normal operation. ORB-HT-51146-APO is a Rate-of-rise detector which has a fixed upper limit but it also measure the rate of increase in temperature.

Key Features

  • Can be used for applications where smoke detectors are unsuitable Ideal for environments that are dirty or smoky under normal conditions Reduced incidences of false alarms Increased reliability of detection


Price : On Request    

Technical Specifications

Model No - Tanım :
55000-121APO Konvansiyonel Sıcaklık Dedektörü
Applications :
  • B&Bs/guest houses
  • Cafes
  • Restaurants
  • Retail
  • Small to medium buildings
  • Dusty environments
Chamber type : Chevron
Heat classification
Polarity :
L1 & L2 are polarity insensitive.
Holding voltage (min) :
Holding voltage (max) :
Holding voltage :
6 to 6V
Minimum voltage to light alarm LED :
Alarm load :
420Ω in series with 2V drop
Humidity (min) :
0% RH
Humidity (max) :
95% RH
Humidity Note :
no condensation or icing
Humidity : 0% to 95% (no condensation or icing)
Operating temperature (min) :
Operating temperature (max) :
Operating temperature :
-20 to 90°C
IP rating Value :
Storage temperature (min) : -30°C
Storage temperature (max) 120°C
Storage temperature -30 to 120°C
Standards EN 54-5
  • LPCB
  • SBSC
  • CPR
Weight 80gr
Colour White
Materials housing Polycarbonate
Product length 42mm
Product diameter
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  • Design and specifications are subject to change without prior notice.
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