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AlarmSense A1R Rate of Rise Heat Detector

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From: £20.03 inc VAT
£16.69 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:  FLASLHSBM

Combined sounder/beacon base:  FLASLHSBB

Brand AlarmSense
Alarm Current

At 2-8.5V: <1.5mA

At 10.5-15V: 25 ± 2mA

At 18-24V: <1.5mA

At 33V: <2mA

Dimensions (HxDia)

Detector only: 42x100mm

Detector with standard base: 50x100mm

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:
2 in stock Expected dispatch: 29th May

£20.03 inc VAT

£16.69 ex VAT

Sounder base
Product Code: FLASLHSBM
Stock Level:
2 in stock Expected dispatch: 29th May

£42.83 inc VAT

£35.69 ex VAT

Combined sounder/beacon base
Product Code: FLASLHSBB
Stock Level:
2 in stock Expected dispatch: 29th May

£52.67 inc VAT

£43.89 ex VAT

Delivery Options

The following delivery options are available on this product.

Standard Delivery

£3.19 inc VAT - Orders will be delivered in 2-3 working days with Evri

Next Working Day Delivery

£6.19 inc VAT - Orders will be delivered the next working day with Evri

For dispatch today order within

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