zappi Wi-FI zappi 2.1 Datasheet zappi 2.1-G Datasheet zappi 2.1 Tamper Retrofit Installation Guide zappi 2.1 Install Guide zappi 2.1 User Guide Non Wi-Fi zappi 2.0 Operation & Installation Manual zappi 2.0 Ethernet Board Install Guide zappi 2.0 Datasheet zappi 2.0 Quick Install Guide zappi 2.0 EU Declaration of Conformity zappi 1.0 Operation & Installation Manual