The LISA TX Smoke Alarm is a combined smoke alarm and radio transmitter.
It operates the same way a normal smoke detector does, however as it also has an intergrated radio transmitter that will also send a signal to any LISA receiver
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Printed on 8th Mar 2021. Please see https://www.sarabec.com/lisa-tx-guardion-smoke-alarm-p131/ for the latest version and links to any instructions for this product.