... equipment and technology, making hardware, circuit board, coil, consent and plug ourselves. Description of goods:Automatic /AC/single phase/avr/electrical/relay ... VOLTAGEPROTECTIONHIGH VOLTAGE PROTECTIONLOW VOLTAGE PROTECTIONOVERLOAD PROTECTIONHIGH TEMPRETURE PROTECTIONCIRCUIT PROTECTION(WITH CIRCUIT BREAKER)OPERATING TEMPERATURE0-40STORAGE TEMPRATURE(-15)/45OPRATING RELATIVE HUMIDITY10%RH-102 ...