The Sharman AV-600 VSWR / Power Meter.
It reads RMS and PEP and covers from 1.8MHz to 525MHz and it uses two sensors with five power ranges 0-5W / 20W / 200W / 400W
Frequency range 1.8 - 160 MHz (S1) and 140-525 MHz (S2)
Measuring ranges 5/20/200/400 W
Accuracy +/- 10%
Minimum power for measurement 0.5W (S1) and 1 W (S2)
Measuring range for standing wave 1.0 - infinity
Pass-through damping less than 0.2 dB max (S1) and 0.3 dB max (S2)
Connection SO-239 at 1.8-160Mhz & 140-525Mhz
Size 152 x 68 x 102 mm
Weight 780 grams