Data Sheet

RM1xx LoRa/BLE Modules
Datasheet
https://connectivity.lairdtech.com/wireless-
modules/lorawan-solutions
5
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1 OVERVIEW AND KEY FEATURES
This Datasheet describes both the RM186 (868 MHz band for EU) and RM191 (915 MHz band for US). The
differences are outlined in the radio specifications.
Every RM1xx Series module is designed to enable OEMs to add a long range LoRa radio link and either Central OR Peripheral
mode Bluetooth Low Energy (BLE) to small, portable, power-conscious devices. The RM1xx modules are enabled with
Laird’s smart
BASIC, an event-driven programming language that enables OEMs to make their product development quicker
and simpler, significantly reducing time to market. smartBASIC enables customers to develop a complete embedded
application inside the compact RM1xx hardware, connecting to a wide array of external sensors via its I2C, SPI, UART, ADC,
or GPIO interfaces.
Based on the world-leading Nordic Semiconductor nRF51822 (BLE) and Semtech Sx1272 (LoRa) chipsets, the RM1xx
modules provide ultra-low power consumption with outstanding wireless range using the LoRa radio link and local BLE
connections via three dBm of transmit power. This document should be read in conjunction with the smart BASIC user
manual.
Note: This information in this document is subject to change. Please contact Laird to obtain the most recent version of
this document – https://connectivity.lairdtech.com/resources/support.
1.1 Features and Benefits 1.2 Application Areas
 Bluetooth v4.1 – Central OR Peripheral Mode
 On-board BLE chip antenna
 U.FL for external LoRa antenna
 smartBASIC programming language
 Bluetooth SIG Listed
 Compact footprint
 Long range – LoRa range up to 15 km
 BLE Programmable TX power +3 dBm to -20 dBm
 BLE TX whisper mode (-30 dBm, -55 dBm)
 BLE RX sensitivity: -91 dBm
 Ultra-low power consumption
 BLE TX: 12.7 mA peak (at +3 dBm @Vcc=3.3V) (See Note 4 in the
Power Consumption section)
 BLE RX: 11.9 mA peak (@Vcc=3.3V See Note 4 in the Power
Consumption section)
 Standby Doze: 4.2 uA (typical)
 Deep Sleep: 750 nA (See Note 4 in the Power Consumption section)
 UART, GPIO, ADC, PWM FREQ output, TIMERS, I2C, and SPI
interfaces
 Fast time-to-market
 FCC/IC (RM191-SM), CE (RM186-SM)
 No external components required
 Public or private networks
 Irrigation/Agriculture
 Parking
 Lighting
 Asset tracking
 Tank monitoring
 Smart Home – smoke alarms,
heating,
 Access control – security
 Industrial automation – factory
 Any long range, battery
powered sensor application