Features: brand new and high quality This product is based on LoRa radio frequency, 868MHz (common in North America), 915MHz (common in Europe) and 433MHz Digital RSSI function Automatic frequency correction,and automatic gain control RF wake-up function Low voltage detection and temperature sensor Fast wake-up and frequency hopping Highly configurable packet handler(common in Asia for Pacific) Specifications: Working voltage: 1.8-3.7v Acceptable current: 10-14mA Antenna Frequency:868MHz / 915MHz/433MHz (Optional) Transmitting current: 120mA @ + 20dBm; 90mA@+17dBm; 29mA@+13dBm Working frequency: 868MHz / 915MHz/433MHz Transmitting power: + 20dBm Receiving sensitivity: -139dBm @ LoRa62.5KhzSF = 12146bps -136dBm@LoRa125Khz&SF=12&293bps -118dBm@LoRa125KhzSF = 69380bps -123dBm@FSK&5Khz&1.2Kbps Frequency error: +/- 15KHz FIFO space: 64Byte Data rate:1.2K-300Kbps@FSK 0.018K~37.5Kbps@LoRa Modulation mode: FSK, GFSK, MSK, GMSK, LoRa TM, OOK Interface form: SPI Sleep current:0.2uA@SLEEP 1.5uA@IDLE Working temperature: -40-+ 85 SMA antenna IP5306 Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 PC x WIFI Wireless Module