MA900 multichannel PID controllers are 1/4 DIN size and feature eight independent autotuning PID loops. They can replace eight single-loop controllers, thus saving installation and operating costs. Multiple MA900s can fit into a single panel cutout. They allow up to eight recipes, which can easily be set by the operator. The scan mode of the units automatically sequence through the 4 or 9 channels, so that they can be viewed without pressing the keys on the front panel. ModBus digital communications are included for easy connections to other devices such as PLCs, computers and operator interfaces. A heater break alarm function monitors each heater and alarm on either full or partial failure to the heater elements.