PSI-02 is used to convert a continuous control signal into single control pulses required in automation control systems. After receiving the control signal at the UST input (rising edge), the transducer generates a pulse at output 6 (contact 5-6 will be closed for 1 sec.). After the control signal disappears (falling edge), the transducer generates a second impulse at output 8 (contact 7-8 will be closed for 1 second).