diff --git a/.gitignore b/.gitignore
index 754876b..fcd7ce9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,11 +1,6 @@
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.
 
-# Original manual
-# http://www.aqmd.gov/docs/default-source/aq-spec/resources-page/plantower-pms5003-manual_v2-3.pdf
-
-pms5003-manual_v2-3.pdf
-
 # User-specific files
 *.suo
 *.user
diff --git a/doc/pms5003-manual_v2-3.pdf b/doc/pms5003-manual_v2-3.pdf
new file mode 100644
index 0000000..7719497
Binary files /dev/null and b/doc/pms5003-manual_v2-3.pdf differ