# Finding Photoelectric Switch

**URL:** <https://forum.digikey.com/t/finding-photoelectric-switch/22588>\
**Category:** Sensors Transducers\
**Tags:** cross-reference, part-identification, optical-sensors\
**Created:** [May 26, 2022, 1:48pm UTC](https://forum.digikey.com/t/finding-photoelectric-switch/22588 "2022-05-26T13:48:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![aramaki2](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@aramaki2](https://forum.digikey.com/u/aramaki2)\
**Post date:** [May 26, 2022, 1:48pm UTC](https://forum.digikey.com/t/finding-photoelectric-switch/22588/1 "2022-05-26T13:48:51Z")

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I am struggling to find a replacement for this switch. The only reference I can find to the part number is here:

[https://www.007swz.com/kaiguan/cp152229.html](https://www.007swz.com/kaiguan/cp152229.html)

Where can I find this, or do I need to find an equivalent part?

 ![PXL_20220526_131435067](https://global.discourse-cdn.com/digikey/original/3X/3/9/39fb9b318f8d32a29bf08df9747e3b9cbb18bed1.jpeg)  
 ![PXL_20220526_131427294](https://global.discourse-cdn.com/digikey/original/3X/5/7/578b73f480776352c21a0da1fadf551ef7020886.jpeg)

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**Author:** ![Jenny\_1307](https://avatars.discourse-cdn.com/v4/letter/j/c67d28/32.png) [@Jenny\_1307](https://forum.digikey.com/u/Jenny_1307)\
**Post date:** [May 26, 2022, 2:20pm UTC](https://forum.digikey.com/t/finding-photoelectric-switch/22588/2 "2022-05-26T14:20:11Z")

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Hello aramaki2 - Welcome to the Tech Forum.

I wasn’t able to locate any information on your switch, so I don’t know what the specifications are. We do have a couple of options you can take a look at: [SEN0455](https://www.digikey.com/en/products/detail/dfrobot/SEN0455/14824956) and [SEN0347](https://www.digikey.com/en/products/detail/dfrobot/SEN0347/13166424). You’ll want to take a look at the datasheets to verify either of these options is appropriate for your application.

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**Author:** ![David\_1528](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/david_1528/32/47212_2.png) [@David\_1528](https://forum.digikey.com/u/David_1528)\
**Post date:** [May 26, 2022, 4:25pm UTC](https://forum.digikey.com/t/finding-photoelectric-switch/22588/3 "2022-05-26T16:25:35Z")

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The _Google-translated_ info from that website helps, but it’s still not entirely clear how it functions. However, from what I can tell, the parts in [this link](https://www.digikey.com/short/0djvwhp0) seem to be the most similar from a functional standpoint.

It appears to be a reflective sensor with a 100mm range and which is optimized for detecting diffuse surfaces. It is designed to operate from 10 - 30 Vdc, and I think the output type is NPN open-collector with the output _ON_ when an object is detected.