APM-MAX-M23-NL-4B is an APM MAX M23 negative LCD advanced panel meter. The APM-MAX-M23 is a multifunctional meter for low-voltage applications, measuring either 0-50mA DC or 0-500mV DC with a shunt. The M23 offers a large screen with a small cut-out, featuring a 60-segment bar graph, a 4-digit display, a starburst messaging area. The unique display combines readability and precision with a color-changing RGB backlight for real-time visual alerts, delivering clear reading monitoring and measurement. The M23 is user-configurable, with programmable scaling, range, alarm thresholds, and backlight color. It has two digital outputs, a 4-20mA analog output, and supports MODBUS® TCP/IP and RTU for seamless integration and communication with other systems. The negative LCD provides color-changing figures on a black background for high contrast in low light environments.