PNOZ yio4 2DI 3NO t 2A000010 Use our relays to control and monitor your plant and machinery – we have the ideal solution for each requirement. For decades, the original PNOZ safety relays have been used millions of times to protect your safety! Expansion module for the modular safety relay myPNOZ, 1 input function, 1 output function with 3 safe relay outputs, positive guided, delayed and 1 input for feedback loop, 2 signal outputs, 1 rotary switch for setting the start type and test pulse detection, 1 rotary switch for setting the delay time, 1 rotary switch for the factor setting for the delay and for selecting the off or on delay, LED display