DT4223 Digital Multimeter

• 4-digit display, bar graph
• low-pass filter for high harmonic suppression
• operating temperature: -10 °C - 65 °C

Detailed Product Overview

The HIOKI DT4223 is a pocket digital multimeter designed for installation and service work. It allows fast AC and DC voltage checks with automatic AC/DC detection and non contact voltage detection, making it well suited for installation and service tasks where the applied voltage is not known 

With its extremely compact design, the DT4223 takes up very little space in a tool bag or jacket pocket. With battery installed and test leads connected, it weighs approximately 210 g, making it easy to carry without adding noticeable bulk. The instrument is powered by a single AAA battery and is protected by a silicone cover, supporting reliable use in everyday installation and service applications. 

Measurement Ranges and Safety

The DT4223 features a clear 6000 count display and a straightforward operating concept for quick checks in everyday work. AC and DC voltage ranges from 600 mV to 600 V allow reliable measurements on control circuits as well as on mains voltage. Safety is ensured by measurement categories up to CAT III 600 V and CAT IV 300 V, allowing use on distribution boards and fixed installations.

To help avoid unintended interruptions during service work, the instrument is equipped with an integrated protection function designed to prevent false tripping of circuit breakers. If measurements are accidentally performed in the resistance or continuity mode on an active circuit, or if the measurement function is changed with test leads connected, the input impedance remains high. The input is only switched to a low impedance state once the measurement condition is recognized as safe. This reduces the risk of unintended shutdowns during maintenance and service work on live systems.

Although extremely compact, the DT4223 is a high quality digital multimeter designed for professional installation, service and troubleshooting work. Like all HIOKI digital multimeters, the DT4223 is developed in Japan and manufactured at HIOKI’s own production facilities in Japan.