Features: Aluminum alloy for shell prolongs its service life. Size 150x75x25mm. The default boot into single-point measurement interface. This instrument has four interfaces: single point measurement, scanning, system information, correction and calibration. brand new and high quality Working Frequency,PS100 is 137.5MHz~2.7GHz, is 35MHz~2.7GHz,please choose you need. Specifications: Model No.:PS100/ Working Frequency: 137.5MHz~2.7GHz/35MHz~2.7GHz Stepped Frequency: 1kHz Display: 2.4inch TFT with resolution 320x240(QVGA) Power Consumption <1.5W Charging Current: 400mA Charging Port: USB Auto Power Off: Settable 5-60minutes Measured Parameters: Impedance, reactance, SWR and S11 Resolution: 4-digit readings Frequency Accuracy: <±10ppm Connector: SMA-K Impedance Measurement Range: 1Ω~1000Ω @frequency < 1300MHz; 1Ω~300Ω @frequency >1300MHz (Impedance Absolute Value) Standing Wave Measurement Range: 1~65 @frequency < 1300MHz; 1~10 @frequency >1300MHz S11(dB)Measurement Range: 0dB to -50dB Error (Single-point measurement): For Impedance: < Impedance absolute value x 5%±0.1Ω (Z<200Ω, <1.5GHz) For Standing Wave: < Effective readings x 10%±0.1 For S11: 0.1dB/5° (0dB to -10dB) For (dB/°): 1dB/10° (-10dB to -20dB); 5dB/20° (-20dB to -40dB) Directivity: < 35dB (140MHz to 2GHz after calibration); < 30dB (2GHz to 2.7GHz) Scanning Points: 280 Output Level: -18dBm Working Temperature: 0℃ to 40℃ Atmospheric Pressure: 860hPa~1060hPa Package Includes: 1 x PS100/ Antenna Analyzer SWR Meter note: For the convenience of the user, each for time calibration correction options will automatically change to the user calibration. Meanwhile, in order to ensure the integrity of the calibration, the calibration process, the automatic shutdown function fails, the consistent boot.