Firstly lets not get hung up on GW1000A, B
Default = 433Mhz
A= 868Mhz
B= 915Mhz
I have both versions of the GW1000A, an early first edition and a second edition model
One GW1000 is looking at the Tri-Wing sensor array and the newer is using the WS80 Ultrasonic array
Both of these display the 'Day Win Max' on the WS-View App
I have tried this on Android 10 and 5
I have version 1.1.36 installed which was last updated 27th December 2019