Spec: Frequency:868/433 MHz Modulation: FSK Supported as well as ASK Circuit Shape: PLL Data Rate: 3K~ 1000Kbps Channel Spacing: 180KHz Sensitivity: 20 dB Sinad Operating Temperature Range: -40 ~ +85 Centi degrees Receiving Current: 5.7mA 5V; Sleep Mode Current: 50 nA Digital RSSI Output Stable; Easy to Use, Low External Parts Count Compliant with FCC, IC, ETSI, RoHS Dimensions: 3.2 x 1.4 x 0.5 (L x W x H) in cms Weight: 5 gms