US $10.79 incl. shipping
output between 0.5 V / 1.5 V depending on the RF field -60 dBm / - 10 dBm
I ordered one to see if you can use it as a node rf signal tester
together with this bandpassfilter tuned @868
with something like this as an ‘field strentgh’ indicator 
finally all parts in tha house… lets build the LoRaWAN light saber (RF fieldstrength detector) 
