# Alternative BLE module 150-RN4871-V/RM140-ND

**URL:** <https://forum.digikey.com/t/alternative-ble-module-150-rn4871-v-rm140-nd/15756>\
**Category:** RF and Wireless\
**Tags:** microchip-technology, wireless-and-iot, rfif-and-rfid, cross-reference\
**Created:** [August 4, 2021, 2:15pm UTC](https://forum.digikey.com/t/alternative-ble-module-150-rn4871-v-rm140-nd/15756 "2021-08-04T14:15:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Vhiggs](https://avatars.discourse-cdn.com/v4/letter/v/c5a1d2/32.png) [@Vhiggs](https://forum.digikey.com/u/Vhiggs)\
**Post date:** [August 4, 2021, 2:15pm UTC](https://forum.digikey.com/t/alternative-ble-module-150-rn4871-v-rm140-nd/15756/1 "2021-08-04T14:15:15Z")

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Urgent request 4/8/2021  
Dear colleagues, we are developing a medical device for COVID-19 linked to a mobile phone using 150-RN4871-V/RM140-ND. We have got excellent results. Need to develop the product further however, due to global shortage 150-RN4871-V/RM140-ND module is not available. Could someone recommend alternatives that are available?  
Thanks for your support

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**Author:** ![Jeff\_2258](https://avatars.discourse-cdn.com/v4/letter/j/ecb155/32.png) [@Jeff\_2258](https://forum.digikey.com/u/Jeff_2258)\
**Post date:** [December 1, 2022, 5:54pm UTC](https://forum.digikey.com/t/alternative-ble-module-150-rn4871-v-rm140-nd/15756/2 "2022-12-01T17:54:36Z")

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Similar options can be found here [RF Transceiver Modules and Modems | Electronic Components Distributor DigiKey](https://www.digikey.my/en/products/filter/rf-transceiver-modules-and-modems/872?s=N4IgTCBcDaIEoDkAsAOA7ARgLQgLoF8g). Specifications will need to be reviewed to make sure to be used in existing / new application.

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Per Microchip’s website for some of the differences between each part.

**Firmware Release Summary, see Software Release Notes for details:**

**Firmware 1.41.0 (web release only)** Adds additional UART configuration flexibility and addresses three known issues. Details are available in the release notes.

**RN4871-I(V)/RM140 - (FW 1.40.0)** Fixes bug with random private addressing which created IoP issue with select Android devices. Added feature to turn off advertising at power-on in order to easily configure module with the host MCU before advertising. Available in industrial temperature range (I) and varying (V) for easier transition from RN4871-V/RM118.

**RN4871-I/RM130 - (FW 1.30.0)** Fixes bug with invalid Bluetooth address. Refer to Errata document for more information.

**RN4871-I/RM128 - (FW 1.28.2)** Introduces LE Secure Connections and Data Length Extension features among other bug fixes. Also improved the operating range to 85C.

**RN4871-V/RM118 - (FW 1.18.3)** Initial Release.

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More info can be found here - [RN4871 | Microchip Technology](https://www.microchip.com/en-us/product/RN4871)