The iM871A-USB is a compact wireless M-Bus USB adapter based on the high performance wireless M-Bus module iM871A. The adapter offers a cost-effective RF solution for smart metering applications connecting water, heat, electricity and gas meters with standard equipment like Laptops, Tablets, etc. The iM871A-usb is qualified according to the RED 1999/5/EC and is fully compliant to the EN 13757-4 standard (S1, S1-m, S2, T1, T2,R2, C1 and C2). An adjusted output power of +14 dBm combined with the high sensitivity of the USB-Stick enables ranges up to 500m.
USB to UART Bridge Virtual COM Port (VCP) drivers for Microsoft Windows, WindowsCE and Linux are available (www.silabs.com). Furthermore the Wireless M-Bus DLL and the Wireless M-Bus Studio GUI from IMSTs Wireless M-Bus Starter Kit “SK-iM871A” can be used to easily configure and explore the iM871A-usb.
Key features
- Supports S1, S1-m, S2, T1, T2,R2, C1, C2 and combined C/T mode
- Small size: 46 x 20 x 11 mm
- Compliant to wireless M-Bus specification EN 13757-4
- Max. output power up to +10 dBm
- 128-bit AES support
- RoHS conform
| Frequency range | 863 Mhz to 870 MHz |
| Output power | typ. +10 dBm (EIRP) |
| Receiver sensitivity | up to -110 dBm |
| Data rate | 4.8 kbps32.768 kbps100 kbps |
| Operating voltage | 4.4 V to 5.25 V |
| Supply current | typ. 37 mA (RX)typ. 60 mA (TX @ +10dBm) |
| Antenna | integrated chip antenna |
| Dimension (LxWxH) | approx. 46 x 20 x 11mm³ |
| Operating temperature | -20°C to +70°C |
| Interfaces | USB 2.0 compliant USB to UART Bridge Virtual COM Port (VCP) drivers for Microsoft Windows,WindowsCE and Linux available (www.silabs.com) |
