The Keysight 44421A is a 20-channel guarded relay multiplexer terminal block designed to expand the measurement capabilities of data acquisition systems. This module allows for the sequential or random selection of multiple input signals for connection to a single measurement instrument. The guarded design minimizes the effects of leakage current, making it suitable for sensitive measurements. It is commonly used in automated testing, data logging, and sensor monitoring applications where multiple points need to be measured efficiently and accurately.

Keysight / Agilent / HP 44421A 20-Channel Guarded Relay Multiplexer Terminal Block
The Keysight 44421A is a 20-Channel Guarded Relay Multiplexer Terminal Block designed for precision measurement applications. It provides a convenient and reliable way to switch between multiple input signals while maintaining signal integrity. With its guarded design, it minimizes leakage current and ensures accurate low-level measurements.
Product Condition & Availability
Keysight / Agilent / HP 44421A 20-Channel Guarded Relay Multiplexer Terminal Block is in excellent working condition and has been thoroughly tested for performance and reliability. We offer both new and professionally refurbished options, depending on availability and customer preference.
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