Parameter: voltage: 5V(DC) +/-5% Bit-rate:2kbps~4kbps? Current:? 2~3mA Sensitivity: -105dBm Dimension: 43mm(L)*12mm(W)*5mm(H) Operating temperature: -20℃ ~ +70℃ Frequency: 315/433.92Mhz / 868M (other frequency available) Channel Spacing : +/-300 KHz Output Level:TTL Pin assignment: VSS DATA DATA VDD VDD VSS VSS ANT