E32 Modules

Wiring

E32 Module	MCU
M0	Any digital output pin
M1	Any digital output pin
RXD	Any UART TX capable pin*
TXD	Any UART RX capable pin*
AUX	Any digital input pin**
VCC	Power supply

*: Some devices may require you to use very specific pins for the UART bus.
**: This pin can be left floating, but the module’s AUX response times will be estimated and inaccurate.
***: Should be between 3.3V and 5.0V for less than 5W, more than 5.2V can cause damage, and some modules support 2.3V !

Model Number Structure

The E32 modules all have a unique name that gives you some information about its abilities, form factor and more.

Here is the standard format:
E32-{Frequency}{Interface}{TX Power Max dBm}{Form Factor}{Optional Variant}

Frequency

170 ➜ 160-173.5 MHz
400 ➜ 410-525 MHz
433 ➜ 410-441 MHz
868 ➜ 862-893 MHz
900 ➜ 862-931 MHz
915 ➜ 900-931 MHz

Interface

T ➜ UART
M ➜ SPI

Max Power

20 ➜ 20dBm / 100mW
30 ➜ 30dBm / 1W
33 ➜ 33dBm / 2W
37 ➜ 37dBm / 5W (Special PSU requirements)

Form Factor

D ➜ DIP (Dual In-line Package)
S ➜ SMD (Surface Mount Device)

Optional Variant

The optional variant can be a number that may have a letter after it, or just a letter:
1, 2, 2T, 3, C, T

I don’t know what the letter mean for sure, it could be related to the minimum voltage input since it seems to be different on those.

Supported Modules

Model	Max TX Power	Frequencies	Chipset
E32-170T30D	30 dBm / 1 W	160-173.5 MHz	SX1278
E32-400T20S E32-400T20S3	20 dBm / 100 mW	410-525 MHz EU443 CN470-510
E32-443T20DC E32-443T20DT E32-443T20S E32-433T20S1 E32-443T20S2T E32-443T20S3	20 dBm / 100 mW	410-441 MHz EU433
E32-443T30D E32-443T30S	30 dBm / 1 W
E32-443T33S	33 dBm / 2W
E32-443T37S	37 dBm / 5W
E32-868T20D E32-868T20S	20 dBm / 100 mW	862-893 MHz EU863-870 IN865-867	SX1276
E32-868T30D E32-868T30S	30 dBm / 1 W
E32-900T20D E32-900T30S	20 dBm / 100 mW	862-931 MHz EU863-870 IN865-867 AS920-923 (“AS1”) AS923-925 (“AS2”) AU915-928 KR920-923 US902-928
E32-900T30D E32-900T30S	30 dBm / 1 W
E32-915T20D E32-915T20S	20 dBm / 100 mW	900-931 MHz AS920-923 AU915-928 (“AS1”) AS923-925 (“AS2”) KR920-923 US902-928
E32-915T30D E32-915T30S	30 dBm / 1 W

All frequencies with a {Region}xxx-yyy code used for LoRaWAN depending on your location.

The E32-400 and E32-900 variants support more channels per modules.

Unsupported Modules

Model	Max TX Power	Frequencies	Chipset
E32-400M20S	20 dBm / 100 mW	433/470MHz	SX1278
E32-400M20S	30 dBm / 1 W
E32-443T27D	???	???	???
E32-900M20S	20 dBm / 100 mW	868/915MHz	SX1276
E32-900M30S	30 dBm / 1 W

The E32-***M**S variants has very basic datasheets, no concrete frequencies could be found.

The E32-433T27D variant is mentioned in the E32 V1.30 User Manual, and on its product page but no proper datasheet could be found for it.

Transmission Modes

The E32 modules support 2 modes of communication named “Transparent” and “Fixed”.

The main characteristic of “Fixed” mode is that it requires you to prepend you message with a target address and channel.

And for “Transparent” mode, you can broadcast as well as monitor.

Please note that Ebyte’s infographic shown below doesn’t state that modules in “Transparent” modes needs to be set on the same channel and address, but you absolutely need to.

E32 Transmission modes. Credit: Ebyte's official store on aliexpress.com

Datasheets

All datasheets are hosted by Ebyte on ebyte.com and cdebyte.com unless specified otherwise.

• E32-170T30D

• E32-400M20S

• E32-400M30S

• E32-400T20S

• E32-443T20DC

• E32-443T20DT

• E32-443T20S

• E32-433T20S1

• E32-443T20S2T

• E32-443T30D

• E32-443T30S

• E32-433T33S (manualslib.com)

• E32-443T37S

• E32-868T20D

• E32-868T20S

• E32-868T30D

• E32-868T30S

• E32-900T20D

• E32-900T20S

• E32-900M20S

• E32-900M30S

• E32-900T30S

• E32-900T30D

• E32-915T20D

• E32-915T20S

• E32-915T30D

• E32-915T30S

If any datasheet becomes unavailable, please open an issue.
We also keep copies of them over at files.nibblepoker.lu just in case.

Alternatively, manualslib.com has a pretty good collection of the most common ones.