Since 2014, we have sold Echo Meter Touch modules with three different types of plugs:

• Lightning (2014 - 2021)

• Micro-USB (2017 - 2022)

• USB-C (2022 - present)

The type of plug your module has determines which types of mobile devices it is compatible with and whether it requires an adapter to connect to different devices.

To help you identify the type of plug your Echo Meter Touch module has, we have provided reference photos of each type, as well as Echo Meter Touch serial number ranges for each type.

Lightning

This type of plug was found on:

• All first-generation Echo Meter Touch modules.

• All Echo Meter Touch 2 PRO for iOS modules (serial numbers beginning with E2A).

• All Echo Meter Touch 2 for iOS modules (serial numbers beginning with E2B).

Micro-USB

This type of plug was found on:

• Early Echo Meter Touch 2 PRO for Android modules (serial numbers E2C00001 - E2C03900).

• Early Echo Meter Touch 2 for Android modules (serial numbers E2D00001 - E2D05250).

USB-C

This type of plug is found on:

• Later Echo Meter Touch 2 PRO modules (serial numbers E2C03901 and later).

• Later Echo Meter Touch 2 modules (serial numbers E2D05251 and later).

Between 2022 and 2024, Echo Meter Touch 2 and 2 PRO modules with USB-C plugs were labeled as “for Android™.”

In April 2024, with a firmware update adding support for USB-C-equipped iOS devices, the labels for these modules were changed to:

• Echo Meter Touch 2, USB-C for iOS® and Android™

• Echo Meter Touch 2 PRO, USB-C for iOS® and Android™

• Why can't I use an adapter to connect a USB-C Echo Meter Touch to my Lightning iOS device?
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