Wireless M-Bus RFModule With UART interface for Serial Communication and Configuration

868MHz UART Interface Wireless M-bus Module WMB13-868 for Meter Reading Application 1. Technical Specification Item Min Typ. Max Unit Frequency bands 868 870 MHz Number of channels 　 12 　 　 Supply voltage VCC 2.2 3.3 3.6 VDC Voltage on any pin VCC-0.7 VCC VDC TX Current (RF_POWER=5/10dbm) 40 mA RX Current 24 mA Sleep Current 0.6 uA Input/output impedance 　 50 　 Ohm RF Data rate 　 4.8 32.768 100 　 kchip/s Max RF output power(VCC=3.3V) 10 dBm Sensitivity, 32.768K 　 -102 　 dBm