1、The protector can measure voltage, current and electricity, and the digital display is convenient for viewing. 2、With over‑voltage, under‑voltage and over‑current protection, has strong practicability, and safer to use. 3、Overvoltage and undervoltage, overcurrent protection value, recovery value and protection action time can be adjusted. 4、Circuit failure recovery delay time and power‑on delay turn‑on time can be adjusted. 5、With the functions of resetting method selection, fault query, restoring factory settings, temporary battery clearing and cycle countdown, etc. Item Type: Monitoring Protector Material: ABS Model: SVP-977Rated Voltage230VAC 50/60HzRated Current1-63A adjustable (default is 63A)Overvoltage Protection Range221V-300V-OFF adjustable (default is 280V)Overvoltage Recovery Voltage Adjustment Range220V-299V (default is 250V)Overvoltage Protection Action Time0.1-10s (default value is 0.1s)Undervoltage Protection Range219V-150V-OFF adjustable (default is 160V)Undervoltage Recovery Voltage Adjustment Range151V-220V (default value is 180V)Under Voltage Protection Action Time0.1-10s (default value is 0.1s)Over Current Adjustment Range1-63A (default value is 63A)Overcurrent Operating Range0.1-512s (default value is 5.0s)Failure Recovery Delay Time2-512s (default value is 60s)Power-on Delay Turn-on Time2-255s (default value is 2s)Power Consumption≤2WElectrical Machinery Life≥4000 timesSizeApprox. 81 x 36 x 60mm / 3.2 x 1.4 x 2.4inInstallation MethodDIN railWorking Temperature-25-+40℃Working Humidity<90%AltitudeNo more than 2000meter / 6561.7ft 1 x Monitoring Protector 1 x English User Manual