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Zeta Duct Unit


  • Price From: £102.18 + VAT
  • This item qualifies for Free Delivery

The Zeta duct unit enables monitoring of an air duct for smoke particles. It is available with a standard base or a relay base. It is supplied with duct sampling probes. Under normal conditions no IR reaches the photodiode. But when smoke enters the chamber it causes the IR to scatter, and this will then be picked up by the photodiode. If the photodiode... Read more »


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Product Name Stock Price Tap in Req. Qty
Common Base
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£102.18 + VAT
(£122.62 inc VAT)
Relay Base
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£110.46 + VAT
(£132.55 inc VAT)


The Zeta duct unit enables monitoring of an air duct for smoke particles. It is available with a standard base or a relay base. It is supplied with duct sampling probes.


Under normal conditions no IR reaches the photodiode. But when
smoke enters the chamber it causes the IR to scatter, and this will
then be picked up by the photodiode. If the photodiode ?sees?
smoke on the 2 following pulses, the detector enters the alarm state,
and lights its LED

Additional Info

Download the Zeta Data sheet - Click here

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