PIR CR2450 Life

crms New Member Posts: 6	PIR CR2450 Life Aug 6, 2022 19:35:59 GMT 8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by crms on Aug 6, 2022 19:35:59 GMT 8 I won't be able to use an external 5v USB supply. Anyone know how long the battery lasts?