... fail holding function ,up to 10 years* Counting mode: counting up or counting down ,selectable by software ... Timer range: 4 digit (99.99s~9999h) ,6 digit (9999.99s~99999.9h)* Terminals ends with ... ;Restrain signals and external reset signals are effective at high voltage voltage ,can be short circuit with ... C, R Timer range4 digit (99.99s~9999h) , 6 digit (9999.99s~99999.9h) Insulation strength100MΩ/min ( ...