/lib/udev/rc_keymaps/dtt200u is in ir-keytable 1.12.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | # table dtt200u, type: NEC
0x8001 KEY_MUTE
0x8002 KEY_CHANNELDOWN
0x8003 KEY_VOLUMEDOWN
0x8004 KEY_1
0x8005 KEY_2
0x8006 KEY_3
0x8007 KEY_4
0x8008 KEY_5
0x8009 KEY_6
0x800a KEY_7
0x800c KEY_ZOOM
0x800d KEY_0
0x800e KEY_SELECT
0x8012 KEY_POWER
0x801a KEY_CHANNELUP
0x801b KEY_8
0x801e KEY_VOLUMEUP
0x801f KEY_9
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