The Keyence NR-TH08 is a high-accuracy temperature and voltage measurement unit designed for precision data acquisition in industrial and research environments. It features eight input channels with a floating unbalanced input method, providing insulation between channels and other connected units except for resistance thermometer inputs. The measurement cycle ranges from 100 ms (A/D integration time: 2 ms) to 1 hour, allowing flexible sampling speeds for various applications. The unit weighs approximately 230 g, including about 100 g for the OP-51582 terminal block.

The Keyence NR-500 operates as the interface unit, enabling reliable synchronization and control within the measurement system. It supports a 10–30 VDC trigger input (TRG IN) with a minimum pulse duration of 2 ms, and a 5 VDC synchronization input (SYNC IN) with a minimum pulse duration of 20 µs. The trigger output (TRG OUT) uses an NPN open collector rated at 100 mA and 30 V maximum, with a residual voltage of 1 V or less, providing stable one-shot signal control. With a weight of approximately 110 g including the OP-51581 terminal block, the NR-500 offers compact and dependable performance. In North America, Europe, Asia, and worldwide applications, the NR-TH08 and NR-500 may possibly be ideal for temperature and voltage monitoring requiring fast sampling and high stability.