Product information

iM881A-M
Long Range Radio Module
The iM881A-M is a compact and low-cost radio module that operates in the unlicensed 868 MHz band and combines a powerful Cortex-M0 controller with the new LoRa™ transceiver SX1272 of Semtech Corporation. It has been specifically designed for battery driven devices. It consumes 40 mA in transmit with the maximum output power of +14dBm. Combined with an excellent sensitivity of down to -138 dBm a range of 12 km can be achieved in free space environment. The iM881A-M is pre-certified according the European R & TTE guideline and can be soldered like an SMD component. iM881A-M passed the Orange device interoperability test. This test validates the performance of the iM881A-M in the Orange public LoRaWAN network environment.
Key Features
- Maximum sensitivity ‑138 dBm
- Range up to 12000 m (LoS)
- Solderable like a SMD component
- 50Ω pad for antenna
- RoHS conform
Application Areas
- Automated Meter Reading
- Home and Building Automation
- Wireless Alarm and Security Systems
- Industrial Monitoring and Control
- Long Range Irrigation Systems
- IoT (Internet of Things)
- Smart Cities
-
Technical Data
- Frequency range:SRD Band 863 to 870 MHz
- Modulation:LoRa™ Spread-Spectrum
- RF output power:up to +15 dBm (50Ω pad)
- Receiver sensitivity:-138 dBm (SF 12; SB 125 kHz, CR 4/6)-134 dBm (SF 12; SB 250 kHz, CR 4/6)-128 dBm (SF 12; SB 500 kHz, CR 4/6)
- RF datarate:0.24 to 37.5 kbps50kbps FSK-modulation
- RF range:up to 12000 m (line of sight)
- Operating voltage:1.8 V to 3.6 V
- Current consumption:1.4 μA (module in sleep, RTC running)11.2 mA (Rx)38 mA (Tx @ 3.0 V/ +14 dBm)
- Interfaces:UARTSPI*I²C*RF (LoRa™)
- IO's:Digital IOsAnalog Inputs
- Dimension (LxWxH):20 x 25 x 3.3mm
- Operating temperature:-40°C to +85°C
- Certification:Pre-Certified according to ETSI EN 300 220iM881A-M passed the Orange device interoperability test
Adobe Reader 9 or newer version is required to view following below PDF files. This is a free program available from the Adobe web site. Follow the download directions on the Adobe web site to get your copy of Adobe Reader.
iM881A Datasheet V1_0 | (783.9 KB) | ||
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iM880x AN011 RangeTest V1_1 | (253.5 KB) | |
iM880B AN016 RFSettings V1_1 | (492.1 KB) | ||
WiMOD LoRaWAN EndNode Modem Feature Spec V1_10 | (541.5 KB) | ||
WiMOD LoRaWAN EndNode Modem HCI Spec V1_13 | (964.4 KB) |
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