Apollo Series 65 Heat Detector CS Standard 55000-137, fixed 90 deg set temperature

Model No. FX345
Availability: Usually 3-5 days


List price £18.32
You save £3.66!

This item requires:

Free delivery

(over £100+VAT, applies to zones A and B only, £6+VAT otherwise)

This is the Apollo 55000-137 (series 65) heat detector CS standard, monitoring temperature temperature by using a dual thermistor network which provides a voltage output proportional to the external air temperature. 
This range is composed of 12 heat detectors which are designed to suit a wide variety of operating conditions. This particular one is a standard heat detector class CS with no base (the base needs to be ordered separately).

The heat detector operates by using a matched pair of thermistors to sense heat. One thermistor is exposed to the ambient temperature, the other is sealed.  In normal conditions, the two thermistors register similar temperatures, but, on the development of a fire, the temperature recorded by the exposed thermistor will increase rapidly, resulting in an imbalance of the thermistors and causing the detector to change to the alarm state.

Note: this heat detector requires a base in order to be installed and operate (see FX340).

  • This heat detector can be used for applications where smoke detectors are unsuitable
  • It is ideal for environments that are dirty or smoky under natural conditions
  • Wide operating voltage
  • Part no: Apollo Series 65 heat detector class CS, part 55000-137 APO
  • EN54-5-2000
  • Supply: 9-33V DC
  • Set temperature: 90 deg. C
  • CE Mark

Ask a question

Note: HTML is not translated!


Sparks Direct delivers via courier to the UK only; the standard delivery charge is £6 + VAT for all orders under £100 + VAT. If your order is over £120, you get free delivery (unless there's a special delivery charge for the items you wish to order or you're in shipping zone C or D). Full details for shipping charges can be found via Terms and Conditions.

If the items you order are in stock and the order is placed before 1.00pm, delivery can be made within 1-2 working days. If the items are not in stock, we will inform you via email how long it will take or ask for your confirmation if there's a long lead time.


We offer 30-day returns for unwanted items - please email us to request a returns number which will need to be quoted when the items are returned. For faulty items or items damaged in transit, please advise via email, and an appropriate returns number will be provided. Full details concerning returns and refunds can be found via our Terms and Conditions.