# Power On Time

The total operating hours \[h] over lifecycle of the drive unit

{% tabs %}
{% tab title="Typescript" %}

```typescript
const onPowerOnTimeChange = (value: number, timestamp?: Date) => {
    console.log(value, timestamp);
};

COBI.motor.powerOnTime.read(onPowerOnTimeChange); // Instantly get the current value
COBI.motor.powerOnTime.subscribe(onPowerOnTimeChange);
COBI.motor.powerOnTime.unsubscribe(onPowerOnTimeChange);
```

{% endtab %}

{% tab title="Javascript" %}

```javascript
const onPowerOnTimeChange = (value, timestamp) => {
    console.log(value, timestamp);
};

COBI.motor.powerOnTime.read(onPowerOnTimeChange); // Instantly get the current value
COBI.motor.powerOnTime.subscribe(onPowerOnTimeChange);
COBI.motor.powerOnTime.unsubscribe(onPowerOnTimeChange);
```

{% endtab %}
{% endtabs %}