Tek-Trol 7802A-0K1 - TEK-LCD 7802A NEMA 4X Loop-Powered Flow Rate/Totalizer Indicator, designed for robust performance in demanding environments such as the cement, water and wastewater, oil and gas, pharmaceutical, and food processing industries. It features a 4-20 mA Input Loop-Powered design with a 5-digit upper display and a 7-character lower display. The indicator offers advanced functionalities like linear, square root, or programmable exponent calculations, open collector pulse or alarm output, and password protection for secure operations. With a wide operating temperature range from -40°F to 167°F (-40°C to 75°C), this indicator is ideal for various industrial applications.