Optimizing the Signs of Warning

The warning is on the wall. Or I guess on an explosive device.

Original Manual With Visuals

Page 3 contains ALL times corresponding to the given digits displayed.

Taking only the first condition met, if the number of unsolved modules + needies modulo...

• 4 is 0, use column D.
• 3 is 0, use column A.
• 2 is 0, use column N.
• 1 is 0, use column G.

Find the warning sign displayed from the tables provided. The intersection of the sign and letter used results in a digit.

Hazard	D	A	N	G	Hazard	D	A	N	G
General warning	1	8	3	7	Flammable matierial	6	7	2	8
Radioactive matierial	3	0	7	6	Poison	7	2	5	3
High temperature	9	5	4	0	Low temperature	2	5	3	4
Mind your head	3	4	9	5	High voltage	0	1	9	7
Irritant	7	8	1	3	Explosive substance	6	4	7	2

Hazard	D	A	N	G	Hazard	D	A	N	G
Biohazard	6	8	1	5	Laser beam	2	7	4	0
Hazardous to the environment	0	2	3	6	Corrosive substance	8	6	9	2
Rotating parts	0	4	8	5	Deep water	1	4	0	8
Risk of falling	9	1	5	6	Cameras	1	5	9	4
Falling objects	8	9	2	3	Slippery floor	8	6	1	9

Use the row as the first digit of the serial number and the digit obtained from the tables on the previous 2 pages as the column to get 3 digits. Unscrew each bolt when the last seconds digit of the countdown timer is those digits. Each unscrew can be delayed up to 9 timer ticks before the module strikes on the 10th.

	0	1	2	3	4	5	6	7	8	9
0	4,7,8	5,7,9	3,6,8	2,8,9	0,6,9	1,6,7	2,4,5	0,1,5	0,2,3	1,3,4
1	2,4,5	5,8,9	0,6,8	4,7,9	0,3,9	0,1,7	2,7,8	3,5,6	1,2,6	1,3,4
2	2,4,5	3,5,6	0,6,9	1,7,9	0,5,8	0,1,4	1,2,8	3,8,9	4,6,7	2,3,7
3	3,4,8	3,5,6	4,6,7	0,1,7	0,2,8	1,6,9	1,2,5	2,3,9	0,4,9	5,7,8
4	6,8,9	4,5,9	4,6,7	5,7,8	1,2,8	1,3,9	0,2,7	2,3,6	0,3,4	0,1,5
5	1,2,6	0,7,9	0,5,6	5,7,8	6,8,9	2,3,9	0,2,4	1,3,8	3,4,7	1,4,5
6	2,5,6	2,3,7	0,1,8	1,6,7	6,8,9	0,7,9	0,3,4	1,3,5	2,4,9	4,5,8
7	5,6,9	3,6,7	3,4,8	1,2,9	2,7,8	0,7,9	0,1,8	1,4,5	2,4,6	0,3,5
8	1,4,6	0,6,7	4,7,8	4,5,9	0,2,3	3,8,9	0,1,8	1,2,9	2,5,6	3,5,7
9	4,6,8	2,5,7	1,7,8	5,8,9	0,5,6	1,3,4	0,4,9	1,2,9	0,2,3	3,6,7