# Reflection value **URL:** \ **Category:** Hardware\ **Created:** [November 5, 2018, 12:37am UTC](https://community.garadget.com/t/reflection-value/4710 "2018-11-05T00:37:27Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Ajb](https://community.garadget.com/letter_avatar_proxy/v4/letter/a/ecae2f/32.png) [@Ajb](https://community.garadget.com/u/Ajb)\ **Post date:** [November 5, 2018, 12:37am UTC](https://community.garadget.com/t/reflection-value/4710/1 "2018-11-05T00:37:27Z")
What kind of “reflection” value should I be seeing? Over the past few days I’ve seen values from 11 down to 4. I have a paper-towel-roll core over the garadget, and the spot is shining in the middle of the reflector. ---
**Author:** ![garadget](https://community.garadget.com/user_avatar/community.garadget.com/garadget/32/34_2.png) [@garadget](https://community.garadget.com/u/garadget)\ **Post date:** [November 5, 2018, 3:35am UTC](https://community.garadget.com/t/reflection-value/4710/2 "2018-11-05T03:35:40Z")
4-11 are pretty weak. Good reflections are 50 and up. Does reflection improve in the dark? ---
**Author:** ![Ajb](https://community.garadget.com/letter_avatar_proxy/v4/letter/a/ecae2f/32.png) [@Ajb](https://community.garadget.com/u/Ajb)\ **Post date:** [November 5, 2018, 11:10am UTC](https://community.garadget.com/t/reflection-value/4710/3 "2018-11-05T11:10:53Z")
11 was at night. ---
**Author:** ![garadget](https://community.garadget.com/user_avatar/community.garadget.com/garadget/32/34_2.png) [@garadget](https://community.garadget.com/u/garadget)\ **Post date:** [November 5, 2018, 4:45pm UTC](https://community.garadget.com/t/reflection-value/4710/4 "2018-11-05T16:45:47Z")
If you still have a second reflector, try holding it in the path of the beam and monitor the reflection ([web app](https://www.garadget.com/my/) reports it in real time) while trying different angles. If you can’t get reflection in 50+ range with the reflector at the normal distance then the [laser may need to be replaced](https://community.garadget.com/t/low-reflection-low-laser/1240). ---
**Author:** ![Ajb](https://community.garadget.com/letter_avatar_proxy/v4/letter/a/ecae2f/32.png) [@Ajb](https://community.garadget.com/u/Ajb)\ **Post date:** [November 5, 2018, 5:08pm UTC](https://community.garadget.com/t/reflection-value/4710/5 "2018-11-05T17:08:49Z")
I’ve held a second reflector quite close to the Garadget, but the reflection value did not change. Can we be sure that it’s the laser module that’s bad and not the sensor? ---
**Author:** ![garadget](https://community.garadget.com/user_avatar/community.garadget.com/garadget/32/34_2.png) [@garadget](https://community.garadget.com/u/garadget)\ **Post date:** [November 5, 2018, 7:34pm UTC](https://community.garadget.com/t/reflection-value/4710/6 "2018-11-05T19:34:23Z")
Did you get better reflection at any point before? Does laser appear dim? ---
**Author:** ![Ajb](https://community.garadget.com/letter_avatar_proxy/v4/letter/a/ecae2f/32.png) [@Ajb](https://community.garadget.com/u/Ajb)\ **Post date:** [November 5, 2018, 7:54pm UTC](https://community.garadget.com/t/reflection-value/4710/7 "2018-11-05T19:54:20Z")
Doesn’t look dim to me: the spot on the reflector, even at its normal distance, seems plenty bright enough. ---
**Author:** ![Ajb](https://community.garadget.com/letter_avatar_proxy/v4/letter/a/ecae2f/32.png) [@Ajb](https://community.garadget.com/u/Ajb)\ **Post date:** [November 5, 2018, 9:42pm UTC](https://community.garadget.com/t/reflection-value/4710/8 "2018-11-05T21:42:24Z")
I don’t remember what kind of readings I was getting when the device was first installed. It is only within the last few months that I’ve been getting all these false opening/closing messages. ---
**Author:** ![garadget](https://community.garadget.com/user_avatar/community.garadget.com/garadget/32/34_2.png) [@garadget](https://community.garadget.com/u/garadget)\ **Post date:** [November 5, 2018, 9:55pm UTC](https://community.garadget.com/t/reflection-value/4710/9 "2018-11-05T21:55:09Z")
Ok, we’ll sort it out. Please PM your order details and we’ll get the service request going. ---
**Author:** ![Ajb](https://community.garadget.com/letter_avatar_proxy/v4/letter/a/ecae2f/32.png) [@Ajb](https://community.garadget.com/u/Ajb)\ **Post date:** [November 7, 2018, 1:18am UTC](https://community.garadget.com/t/reflection-value/4710/10 "2018-11-07T01:18:31Z")
Sorry, I can’t see how to send the details as a PM rather than to the forum. I bought the Garadget a little over a year ago, so I assume it’s now out of warranty, but I know how to use a soldering iron. I’ve seen the information you’ve posted to others about the type of laser module to get, but I haven’t seen anything about what kind of detector. ---
**Author:** ![garadget](https://community.garadget.com/user_avatar/community.garadget.com/garadget/32/34_2.png) [@garadget](https://community.garadget.com/u/garadget)\ **Post date:** [November 7, 2018, 1:29am UTC](https://community.garadget.com/t/reflection-value/4710/11 "2018-11-07T01:29:16Z")
To send a PM you click on the profile image and then blue “Message” button. Garadget uses a photo-transistor [3DU5C](https://www.ebay.com/sch/i.html?&_nkw=3du5c). ---
**Author:** ![Ajb](https://community.garadget.com/letter_avatar_proxy/v4/letter/a/ecae2f/32.png) [@Ajb](https://community.garadget.com/u/Ajb)\ **Post date:** [November 7, 2018, 8:42pm UTC](https://community.garadget.com/t/reflection-value/4710/12 "2018-11-07T20:42:18Z")
OK. I’ve sent the order info. as a PM.