Available. The Keyence CU-21TA is a versatile control unit designed for industrial automation applications. This multi-functional device offers two input channels compatible with NPN open-collector or contact output sensors, providing flexibility in sensor integration. It features a relay output rated for 250 VAC at 2 A, suitable for resistive loads, and an NPN open-collector transistor output capable of handling up to 100 mA at 40 VDC, accommodating various control requirements. The CU-21TA includes a built-in timer with selectable modes such as ON-delay, OFF-delay, one-shot, and timer OFF, with adjustable time settings ranging from 0.05 to 1 second or 0.5 to 10 seconds, enhancing its adaptability to different operational needs. Additional functionalities include input signal inversion, selectable edge or level synchronization, and AND logic operations, allowing for complex control logic implementation. Designed for reliability, the CU-21TA operates within a temperature range of -10 to +50°C and a humidity range of 35% to 85% RH, ensuring stable performance in diverse environments. Its compact design, weighing approximately 120 grams, makes it suitable for integration into various industrial systems where space and weight considerations are critical.