Schematic of Safe
Pin A
_6
Pin B
_2
_3
_6
_5
Pin C
_4
_1
_6
_6
3.3V
R2
Resistance
10kΩ
R6
Resistance
10kΩ
R7
Resistance
1kΩ
R9
Resistance
1kΩ
R1
Resistance
1kΩ
3.3V
3.3V
R5
Resistance
1kΩ
R3
Resistance
1kΩ
R4
Resistance
10kΩ
Q2
Q3
Q1
D2
D1
D5
D4