The ST-4-3031364 is a signal conditioning relay from Phoenix Contact. It is a 4-channel, universal signal converter that can be used to electronically process digital, frequency, and analog signals. The ST-4-3031364 is DIN rail-mounted and is housed in a robust metal housing for reliable operation in a wide range of environments. The relay is equipped with a 24 VDC power input, protection against output short-circuit and overload, 2-wire connection and LEDs for each channel. The functions of the relay include low-pass filter, high-pass filter, differentiation, averaging, hysteresis control, and hold-right.