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AlarmSense A1R Rate of Rise Heat Detector

From: £15.59 inc VAT
£12.99 ex VAT
Product Overview

The AlarmSense A1R rate of rise heat detector from Apollo is designed to comply with BS 5839-1 and 6. The detector is triggered in to the alarm state as the temperature increases and features a fixed upper limit (55 °C) in case the temperature rate increase has been too slow. AlarmSense A1R heat detectors are ideal for environments which are smoky under normal conditions.

  • Detects a fire as the temperature increases
  • CE marked
  • Designed to comply with BS 5839-1 and 6
  • Features a fixed upper limit of 55 °C in case the increase in temperature is too slow
  • Available with three different base options:
  • Fitted with two LEDs for 360° visibility
  • The sounder beacon base enables compliance with the Disability Discrimination Act
  • Designed for use with the CFP AlarmSense two wire fire alarm panels
  • Ideal for use in environments that are smoky under normal conditions
  • White polycarbonate housing
Technical Data
Product Code
Standard mounting base FLASLHB
Sounder base FLASLHSB
Combined sounder/beacon base FLASLHSBB
Brand AlarmSense
Alarm Current

At 33V: <2mA

At 18-24V: <1.5mA

At 10.5-15V: 25 ± 2mA

At 2-8.5V: <1.5mA

Dimensions (HxDia)

Detector with standard base: 50x100mm

Detector only: 42x100mm

Manufacturer Part Number

Detector Head: 55000-190

Standard Base: 45681-244

Sounder Base: 45681-510

Sounder Beacon Base: 45681-509

Maximum Reset Voltage


Operating Voltage


Quiescent Current

<50µA at 15V

Reset Time


Temperature Trigger

55 °C and rate of rise function

Weight 0.10kg
Product Datasheets

Pricing & Availability

Model Stock Price
Standard mounting base
Product Code: FLASLHB
Stock Level:
1 in stock Expected dispatch: 21st Sep

£15.59 inc VAT

£12.99 ex VAT

Sounder base
Product Code: FLASLHSB
Stock Level:
Available to order Expected dispatch: 23rd Sep

£29.39 inc VAT

£24.49 ex VAT

Combined sounder/beacon base
Product Code: FLASLHSBB
Stock Level:
1 in stock Expected dispatch: 21st Sep

£39.59 inc VAT

£32.99 ex VAT

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.79 inc VAT - Orders will be delivered in 3-5 working days by Hermes

Express Delivery

£7.91 inc VAT - Orders will be delivered in 1-2 working days by Hermes

Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

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Direct Telephone 01507 464183


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