# RadioMaster ER4 ELRS 4-channel PWM receiver

> What are the dimensions of the RadioMaster ER4 ELRS 4-channel PWM receiver?

- Category: RC planes › Receivers
- Kind: Modern device
- Basis: Manufacturer specifications (RadioMaster)
- Page: https://xemstudio.com/objects/radiomaster-er4-receiver/ · JSON: https://xemstudio.com/api/geometry?object=radiomaster-er4-receiver · Plain text: https://xemstudio.com/objects/radiomaster-er4-receiver/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 30 | 15 | 5 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- From RadioMaster's product page.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.

## Sizes

| dimension | value |
|---|---|
| Dimensions | 30 × 15 × 5 mm |
| Weight | 3.0 g |
| Outputs | 4 CH PWM |
| Power | DC 4.5–8.4 V |
| Antenna | 15 cm |

## Where the files are

- RadioMaster: [ER4 2.4GHz ELRS PWM Receiver](https://www.radiomasterrc.com/products/er4-2-4ghz-elrs-pwm-receiver) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/radiomaster-er4-receiver/index.json

- radiomaster-er4-receiver-envelope: [STEP](https://xemstudio.com/files/hardware/radiomaster-er4-receiver/radiomaster-er4-receiver-envelope.step) · [STL](https://xemstudio.com/files/hardware/radiomaster-er4-receiver/radiomaster-er4-receiver-envelope.stl) — Envelope 30 × 15 × 5 mm (Receiver case L × W × H, antennas and pins excluded)

## Questions

**How big is the ER4?**

30 × 15 × 5 mm, 3.0 g.

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