SURECOM SF-20 20W Power Meter and Frequency counter

Features: 1) Power readout directly in digital form without any calibration. 2) Maximum measurable power range up to 20W. 3) Check your Radio power output watt radio frequency under a second.4) Easy connection with handheld Radio Specifications: Measurable power range: 0.1-20W Maximum power input: 20W0-10W  (Measuring can not be continue for more than a minute )10W-20W (Measuring can not be continue for more than a 30 second )20W or more  (Measuring can not be continue for more than a 5 second  ) Caution : RF power over 20W may damage the 50 Ω dummy load. Metal body is heated while working. Features function Hold the red button for only 2 seconds then let goHold red button -" Power on " and "Frequency counter "modePush red button -" Power Meter "modePush red button -" Signal Level "modePush red button -" Battery Level "mode 1.1) How to use Frequency counter .Two ways to use the frequency counter meter :  A) Connect walkie-talkies with BNC B) Receive radio signals from the top sma antenna Hold red button --" Power on " and "Frequency counter "mode Connect the antenna to sma . 20.000MHz to 999.999 MHz 1.2) How to use Power meter .Hold red button -switch onPush red button once to mode "POWER "Connect the BNC to the radio output .1.3) How to use signal input level .Hold red button -switch onPush red button twice to mode "receive "Connect the antenna to sma. 1.4) How to check Battery level .Hold red button -switch onPush red button 3 times to mode "BAT "     Package Contents  1x SF-20 POWER METER / FREQUENCY COUNTER1x English User Manual1x USB charger cable 1x USB AC adapter 100-240V