Installing PeTech root CA certificate
From PeTechWiki
Downloading the certificate
You may download the root CA certificate for PeTech SSL here.
To verify the certificate's authenticity, it's SHA1 fingerprint is 37:4B:E0:A0:47:CD:65:8B:B3:CC:51:18:30:9D:E3:20:E8:94:69:3F
.