We love this meter!! It is by far the best in its category, accurate and third party tested with all the functions to take accurate measurements.
The Safe and Sound Pro II RF Meter is a compact, simple to use the meter for Radio Frequency / Microwave Radiation (200 MHz to 12Ghz). The meter has been tested and certified by The Centre for Intelligent Antenna and Radio Systems (CIARS) Lab at the University of Waterloo in Ontario, Canada. The Pro II includes all the same features the original Safe and Sound Pro has: Max Hold, USB power jack for continuous monitoring, Adjustable volume control and 2.5mm headphone jack and sound signature analysis. 
New features include: Max Reset Button, lower noise floor, a more robust and bright display and an upgraded microprocessor.
You can see more about it here
 
Features:
True response detection range: (650 MHz to 10 GHz) +/- 6dB, effective 200 MHz to 12 GHz
Accuracy +/- 6dB - Performance tested in a 3rd party certified RF testing lab
Each meter is individually calibrated and QC inspected
Sound signature analysis to assist with source identification - 3 selectable volume levels + Sound On/Off
Low EMF emissions, designed for the Electrically Hypersensitive person in mind
Premium OLED Display for a real time display that is easy to read in any type of light
Uses state of the art measurement technology and is sensitive below 0.1 µW/m²
Meters are temperature compensated to measure accurately under any environmental conditions
Power Response linearization completed in a 3rd party certified RF testing lab
Will measure 5G cellular signals between (200MHz - 12GHz)
Measures power densities up to 2,000,000 µW/m² and below 1 µW/m²
Max Hold with option to clear at anytime
Bar graph of RF intensity
USB Power Jack for continuous monitoring
High quality adjustable Volume Control, as well as 2.5mm headphone jack
Battery remaining display
Battery operated (2 x AA Alkaline only) - 12 - 15 hour battery life
Small, durable and compact handheld design - 7" X 4.5" X 1.5" (17cm x 11cm x 4cm)
Engineered in Canada - Manufactured in Canada and the USA
2 Year Warranty

Applications:
 
Quickly determine RF present in your environment within 200 MHz and 12 GHz
Some of the more common sources the meter can detect:
Cell towers
Cell phone emissions
Cordless home phones
Wireless routers (both 2.4 and 5 GHz)
Bluetooth devices
Smart meter emissions
Baby monitors
Airport radar
Microwave oven leakage detection
 
Download Manual 
https://slt.co/Downloads/Shared/SS_Pro_II_Manual.pdf