> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/hardware-products/hardware/engage-devices/exxx-series/e285/e285-installation-guide/specifications.md).

# Specifications

This chapter discusses power requirements, dimensions, and other specifications of the e285 device.

## Unit Power Requirement

* Input power rating: 5V DC, 1 A
* Charging via USB-C to computer system or Verifone-certified power adapter.

## Temperature

* Operating Environment: 0°C to 50°C (32°F to 122°F)
* Non-Operating Environment: -20°C to 60°C (4°F to 140°F)

## Humidity

* Relative humidity: 5% to 90% RH non-condensing

## External Dimensions

* Length: 138 mm
* Width: 68 mm
* Height: 17.6 mm

## Weight

* 186 g

## Memory

* 256MB Flash, 128MB DDR

## Magnetic Stripe Card

* Triple-track
* Supports bi-directional card read, swipe speed at 10 IPS to 40 IPS

## SAM Card Reader

* Non-sliding
* Card conserving plated landing contacts
* SC voltage 1.8V, 3.0V, 5.0V

## Communication

* BT, Wi-Fi, and 3G Options
* Wi-Fi dual band supports:
  * 802.11 a/b/g/n/ac connectivity
  * 2.4GHz and 5GHz
  * Auto-band selection

## Display

* 2.8" Color Touch (320 X 240)

## SD Memory

* NAND Flash: 2 Gbit with 8-bit bus width
* LPDDR2 SDRAM memory: 1 Gbit with 32-bit bus width


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.verifone.com/hardware-products/hardware/engage-devices/exxx-series/e285/e285-installation-guide/specifications.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.