TP-Link kasa smart KD110 User Manual page 8

Step 4. Insert a microSD Card
If you want to record videos locally, you'll need to insert
a microSD card by removing the two screws on the
back of the doorbell.
Step 5. Install your doorbell
Follow app instructions to install your doorbell. Below are the size of screws:
Size of Screws Securing SD Card
0.6 +0.15
0
1.3±0.1
Size of Wiring Screws
0.6
+0.15
0
1.3 0.1
Size of Mounting Screws
2Max
3.6 REF
+0.15
0.8
-0
5.0±0.2
3.0±0.2
5.0±0.2
3.0±0.2
3 0±0.5
6