Zelio controller This multifunctional voltage guard is used in DC and AC voltage networks and allows monitoring of exceeding or falling below a adjustable threshold (15-600 VAC/DC). In addition the limit value, the switching hysteresis and a switch-off delay are adjustable. At the output there are two relay changers available, which can be charged up to 5 A. Optionally, an error memory can be selected that holds the message up to a reset. 2 LEDs indicate the device status. The wide-voltage power supply (24-240 VAC/DC) enables a universal application. The cable is connected via screw terminals.This text is machine translated.