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[Ticket Question] 24v PIR and contacts

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I am looking for some alarm PIR sensors that will operate on a 24v DC supply
for use on a double-decker bus that is being converted to a Men’s Shed
workshop. The standard bus supply is 24v and the alarm contacts would need
to be either N/O or N/C

as the alarm control panel does not use EOL resistors.

Please could you suggest some suitable devices.

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This is for internal detection.

The alarm controller is designed for a commercial vehicle that runs on a 24v supply.  The supplied sensors are ultrasonic intended for use in the confined space of a truck cab and therefore not suitable for the wide space on a bus with draughts around the doors. The alarm box has auxiliary connections for normally open or closed contacts which the manufacturer has advised could be used with a regular internal PIR that will operate on a 24v supply (but they do not supply)

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