# MeterReading

> A totalizer register value. Since v2.3.

> **MeterReading** = [`ProductionEntryBase`](/core/api/type-aliases/ProductionEntryBase) & `object`

A totalizer register value. Since v2.3.

## Type Declaration

### datetime

> **datetime**: `string`

RFC 3339 instant of the reading.

### meter\_id

> **meter\_id**: `string`

`meters[].id` of the meter read.

### reading

> **reading**: `number`

Register value in m³. Meters reading in liters are converted on input.

### source?

> `optional` **source?**: [`OpenVocab`](/core/api/type-aliases/OpenVocab)\<[`ReadingSource`](/core/api/type-aliases/ReadingSource)\>

Recommended values: [READING\_SOURCES](/core/api/variables/READING_SOURCES).

### type

> **type**: `"meter_reading"`