Detection of voltage signal or relay contact signal for High/Low state recording

4 channels (common ground between unit and channels), digital/contact input, switchable (contact input can detect open-collector signals)
Input resistance: 1 MΩ (with digital input, 0 to +5 V)
500 kΩ or more (with digital input, +5 to +50V)
Pull-up resistance: 2 kΩ (contact input: internally pulled up to +5 V)

1.4V/ 2.5V/ 4.0V

1.4 V: 1.5 kΩ or higher (open) and 500 Ω or lower (short)
2.5 V: 3.5 kΩ or higher (open) and 1.5 kΩ or lower (short)
4.0 V: 25 kΩ or higher (open) and 8 kΩ or lower (short)

500 ns or more

0 to +50V DC (the maximum voltage that can be applied across input pins without damage)

62 mm (2.44 in)W × 94 mm (3.70 in)H × 20 mm (0.79 in)D, 150 g (5.3 oz), Main unit cable 1.5 m (4.92 ft), input section cable 300 mm (0.98 ft)

IC clip leads ×1, Alligator clip leads ×1, Carrying case ×1, Instruction Manual ×1