http://projects.scorchingbay.nz/dokuwiki/ 2026-05-02T23:01:30+12:00 http://projects.scorchingbay.nz/dokuwiki/ http://projects.scorchingbay.nz/dokuwiki/_media//favicon.ico text/html 2019-02-05T14:05:42+12:00 http://projects.scorchingbay.nz/dokuwiki/electronic/pir/am110?rev=1549328742&do=diff [AM110] PIR Description ModelAM110ManufacturerArlecBoard IDsW933B-R, W933C-R, 0620Operating voltage Quiescent Current Output level Retriggerable Delay time Block time Board Dimensions Sensor cone angle Sensor range Operation Temperature Sensor lens size Related datasheets * HT9274 Quad op-amp. * 4069 Hex cmos inverter text/html 2019-01-30T19:52:58+12:00 http://projects.scorchingbay.nz/dokuwiki/electronic/pir/lo403cets?rev=1548831178&do=diff [Lo403-CETS-V1.3] PIR Description ModelLo403-CETS-V1.3Manufacturer Operating voltage1.5VQuiescent Current Output level3.3VRetriggerableyDelay time5sBlock time Board Dimensions Sensor cone angle125ºSensor rangeOperation Temperature-30 - 70ºCSensor lens size15mm text/html 2019-02-05T13:47:02+12:00 http://projects.scorchingbay.nz/dokuwiki/electronic/pir/sidebar?rev=1549327622&do=diff PIR module data * AM110 * MH SR505 * LO403-CETS-V1.3 text/html 2022-10-03T13:53:37+12:00 http://projects.scorchingbay.nz/dokuwiki/electronic/pir/sr505?rev=1664758417&do=diff [MH-SR505] PIR Description ModelMH-SR505 (HC-SR505)Manufacturer Operating voltage4.5 - 20VQuiescent Current60µAOutput level3.3VRetriggerableYDelay time8sBlock time Board Dimensions10 x 23mm Sensor cone angle< 100ºSensor range< 3mOperation Temperature-20 to +80ºCSensor lens size10mm Arduino test code: text/html 2018-12-18T07:52:22+12:00 http://projects.scorchingbay.nz/dokuwiki/electronic/pir/start?rev=1545072742&do=diff Overview Passive infra-red sensors are used in many applications to detect the presence of people, eg security lights. I expect that when those devices become faulty it is not the PIR device that has failed but some other component (most likely in the power supply).