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AlarmSense A1R Rate of Rise Heat Detector

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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 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:
1 in stock Expected dispatch: Today

£15.59 inc VAT

£12.99 ex VAT

Sounder base
Product Code: FLASLHSB
Stock Level:
Available to order Expected dispatch: 20th Jan

£32.15 inc VAT

£26.79 ex VAT

Combined sounder/beacon base
Product Code: FLASLHSBB
Stock Level:
Available to order Expected dispatch: 20th Jan

£39.59 inc VAT

£32.99 ex VAT

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.99 inc VAT - Orders will be delivered in 3-5 working days by Hermes

Express Delivery

£8.10 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.

Direct Telephone 01507 464183