The A103-004 is a product that meet nearly every requirement for panel mounted control and indication. Housed in a DIN standard 36mm x 72mm case, the A103-004 is perfect for advance rate indication applications. The input scale factor which allows its display to be calibrated in meaningful engineering units such gallons per minute or piecss per hour.No required programming leads to plug-and-play simiplicity and minimal installation time. It has an 8 digit supertwist LCD display which can be backlighted by connecting an external DC (10-28 Volt) power supply. A single unit can accept NPN & dry contact inputs for low speed (30Hz) counting and PNP or square wave signals for high speed applications up to 10 kHz. It is powered by either one or two replaceable 3V Lithium batteries which allows for a new battery to be installed before removing the old one.A NEMA 4X rating and a high level of noise immunity make this unit sutiable for harsh environments.