A high quality logic probe for use with TTL, DTL and CMOS ICs. Like the LP-2800 but comes with case, two audio tones and two external terminals. 

 

Max input frequency: 17MHz

Minimum pulse width: 30ns

Input impedance: 1M Ω

Pulse flash time: 500ms

Audible tones for high and low

Power supply protection:  20V

TTL threshold: (Lo) 0.8V  0.2V, (Hi) 2.3V  0.2V

CMOS threshold: (Lo) 30% VCC, (Hi) 70% VCC

Size: 7.7"L x 1.0"W x 0.6"H