Logic Probe

1.Input impedance 1MΩ
2. Width of min. pulse: 30 ns
3. Max. input frequency: 17 MHz
4. Measurable logic gate
(1) Logic 1 (red LED lights) and buzzer:
TTL: 2.3V ± 0.2V
CMOS: 70%Vcc
(2) Logic 0 (green LED lights) and buzzer:
TTL: 0.8V ± 0.2V
CMOS: 30%Vcc
5. Input overvoltage protection: ± 220V DC / AC 15sec
6. Pulse (yellow LED) flashing time: 500ms
7. Power supply protection: ± 20V