618259 Trumeter AMMETER, NEG LCD WITH OUTPUTS - Trumeter APM-FREQ-ANO, The APM Frequency Meter measures frequency and speed from DC pulses, supporting 2-400Hz input with 0.5% accuracy and 20-point non-linear scaling for non-linear sensors. Its LCD display combines analogue readability with digital precision, featuring a large readout, 40-segment bar graph, and colour-changing backlight for instant feedback. Customize scale, range, alarms, and messaging via the free APM configuration software. Pair with the IoT Gateway for Trumeter Cloud access, enabling remote monitoring, data logging, and alerts via SMS, email, or online. Two independent outputs support digital (open collector) or analogue (4-20mA). The negative display, optimized for low-light environments, features colour-changing figures on a black background. Trumeter APM-FREQ-ANO FREQ METER NEG LCD WITH OUTPUTS