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PIR RELAY TIMER

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PIR RELAY TIMER

UK built circuit to open a relay for 5-75 seconds after 12V DC PIR sensor detects motion

Buy of PIR RELAY TIMER.
(1-5: £9.99 each, 5+: £9.49 each)


PIR RELAY TIMER. UK built circuit to open a relay for 5-75 seconds after 12V DC PIR sensor detects motion

Additional Information

This circuit is designed for use with the 12V DC Honeywell IS-215T passive infrared motion sensor which we sell in the REUK Shop. It is handbuilt in the UK using top quality electronic components and it has been designed to be very easy to use.

When the PIR sensor detects motion it sends out a signal which triggers this circuit. The length of time the relay stays closed after the PIR sensor signal has finished is manually-adjustable from 5 seconds to around 75 seconds.

Use a small screwdriver or the point of a very sharp knife to rotate the timer adjustment:

turn clockwise to reduce the time from 75 to 5 seconds.
turn anti-clockwise to increase the time from 5 to 75 seconds.

PIR relay timer circuit with suggested connections

The connection labelled PIR IN above originates as the PIR Sensor Signal shown in the diagram below of the connections within the PIR sensor unit:

Connect the circuit to the PIR sensor

Full circuit diagrams for this device are available in our article PIR Sensor Circuits if you would prefer to solder your own together. We are happy to supply the components required - price on application.

NEW If you are planning a circuit containing two PIR sensors (for example one at the front and one at the rear of a property), this circuit is not suitable. Instead please read our article Multiple PIR Sensor Circuits and consider purchasing our Double PIR Relay Timer.

Further Information

If you have any questions about the operation of this circuit and our 12 Volt DC PIR Sensors please contact neil@reuk.co.uk directly by email.

Related REUK.co.uk Articles

Find out how to integrate PIR (passive infra red) sensors into renewable energy applications
Find out more about using PIR sensors within renewable energy applications
Connecting more than one PIR sensors in a circuit

© 2006-2008 REUK - All Rights Reserved
Page Last Updated on 3rd November 2008 at 04:16:05pm

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