RS Components
Our website uses cookies and similar technologies to provide you with a better service while searching or placing an order, for analytical purposes and to personalise our advertising to you.

Microchip RN42SM-I/RM Bluetooth Chip 2.1 + EDR

Available to back order for despatch when stock is available
Add to Basket

Price Each (In a Bag of 64)


(exc. VAT)


(inc. VAT)



RS Stock No.:
Mfr. Part No.:
COO (Country of Origin):
UnitsPer unitPer Bag*
64 +£21.168£1,354.752
*price indicative

RN-42-SM Bluetooth 2.1 + EDR Class 2 Socket Module

The RN42-SM is a through-hole PCB module featuring the RN42 Bluetooth Class 2 radio designed for OEMs adding wireless capability to their products. The RN42 is perfect for battery powered applications and by default is ready to use in the SPP (Serial Port Profile) configuration. It uses only 250μA in sleep mode while still being discoverable and connectable. Multiple low power modes available allow you to dial in the lowest power profile for your application.

RN42-SM Socket Module
RN42 Bluetooth module
RS-232 serial interface with RTS/CTS flow control
Jumper link header for: Default Baudrate, Auto Discovery, Auto Master and Factory Reset
2 x Status LEDs
On-board +3.3V regulator
Dimensions: 33 x 23mm

RN42 Class 2 Bluetooth module
Bluetooth 2.1 + EDR (Enhanced Data Rate) transceiver module
Backwards-compatible with Bluetooth 2.0, 1.2 and 1.1
RF Frequency Range: 2.402 to 2.480GHz with 79 channels
Modulation: GFSK with FHSS
RF Output Power: +4dBm
Receiver Sensitivity: -80dBm
Host communication: serial UART with RTS/CTS flow control
Sustained SPP data rates: 240kbps (slave), 300kbps (master)
Embedded Bluetooth stack: GAP, SDP, RFCOMM and L2CAP protocols, with SPP and DUN profile support
AES-128 encryption
PCB antenna
Power supply: +3.0V to +3.6Vdc
Operating temperature range: -40 to +85°C
Applications: Cable replacement, Barcode scanners, Measurement & monitoring systems, Industrial sensors & controls, Medical devices


RN42 Bluetooth module also available separately under RS Part No. 765-2879


Bluetooth, FCC, IC, EN

Bluetooth - Microchip

Bluetooth ClassClass 2
Bluetooth Version2.1 + EDR
Maximum Output Power+4dBm
Receiver Sensitivity-80dBm
Supported Bus InterfacesUART, USB
Dimensions25.8 x 13.4 x 2.4mm
Maximum Operating Temperature+85 °C